At the moment there's no killer app.
When's someone gonna code up a true P2P marketplace, silkroad without any servers using distributed hash tables and a democratic escrow system or do I have to do it my damned self!
The killer app is bitcoin itself. If you look at the growth it has had since the beginning, that's proof enough. The
all time bitcoin transactions statistics is a good example of bitcoins uptake.
Growth does not happen overnight, so everyone has to be patient. Remember this was created out of nothing. Cryptocurrencies are completely new. Check out
market share. Not sure if that's completely accurate, but if it is, I think being not too far off from Western Unions marketshare is not bad.
The killer app is bitcoin itself, and how do I explain that?
- You can send value to anyone with an internet connection without asking anyone for permission.
- That same value is transmitted without it being stopped forcefully by some party, that will 'investigate' the transaction, possibly reject it outright or reluctantly let it pass, after you've answered all kinds of elaborate questions and provided an awful lot of personal identifiable information. In addition information about your transaction is possibly relayed to a 3rd party which in all honesty has absolutely no business whatsoever peaking into your personal private financial transactions. If you have 1 BTC you want to send to your brother in Turkey, that's nobody's business except you and your brothers.
- The bitcoin address/account cannot easily be blocked by a 3rd party, which we see is happening all over the globe every day of the week at a bankers whim these days.
- The transaction is fast, and with low fees.
- You do not have to leave your house to make a bitcoin transaction, you can do it from anywhere you have an internet connection, or even issue the transaction offline and then send it with traditional mail for someone to put it onto the network somewhere else.
- While the transaction is broadcasted on the blockchain which is open for everyone to have a look at, the only thing onlookers can see is the amount sent, and the addresses involved. I would think more analysis could be made as well, but it's not like a bank where if you send 20000 USD to someone, that's automatically added to databases of other government agencies. And there's also other projects in the works, that I haven't looked closely into, but take Darkcoin as an example.
- If you get stopped by the police, they can readily connect to any bank where you have an account and read your balance and any other information they might require. This is lack of personal freedom. With bitcoin you don't have to reveal anything. Just keep whatever balance you feel confident with on a normal banking account, and attach some credit card to it, so whenever asked, you just show your card with 3K USD on it or whatever. This so you don't arise any suspicion. The finances of an individual should be private. It's like your thoughts. Sometimes you have 'bad thoughts', and if those 'bad thoughts' were posted on twitter, or facebook or anywhere else under your full name, you would probably immediately receive a visit by some law enforcement officiers, because you're a 'threat'. Lots of the throughts you have in your mind at certain points are governed by emotions, if someone does something really bad towards you, for example some government officials which can basically do whatever the hell they want with you without any consequences whatsoever, it's only natural to have 'bad thoughts' reflecting the situation. In a future, governments might make it mandatory to wear a thought-collecting device, that would monitor and collect all of your thoughts, and once some 'unacceptable thoughts' were discovered, some robotpolice would immediately be dispatched to rectify the unwanted behaviour. Many people would approve such behaviour, as they'd gradually be accustomed to their privacy rights being invaded and eroded, bit by bit, part by part. The government want power and control, that's their main concern. So the people need to fight them every part of the way.
So just be patient, and let the services develop, and let's have the bitcoin economy mature.
You as an individual should be free. Free to think what you want, and free to do what you want, as long as you don't harm others. In today's society we no longer have freedom. If someone does not like you, and have the right powerful position, for example as the manager of your local bank where you have your mortgage loan, try pissing of your local mayor, which is his friend. The bank can come up with any excuse whatsoever to make life difficult for you. You could always fight it, but that could be taking so much of your life that it's not worth it. So as a consequence, most people just keep their head down low, and plug around in their daily lives, and they live in fear. What if I say that or this, will I loose my job, will I loose my house?
Even if you had some justified important discoveries you wanted revealed, you could still be punished. Truth and justice is not something that everyone subscribe to, some people rather just want to stay in power, at the cost of others.
If nobody can touch your financial assets, then you're more free. If you have 10K USD in bills in your house, and then you spend these for groceries, having the lawn moved or whatever, you spend your personal money without anyone else looking at what you spend the money for, whereas if you use a credit or debit card, there's a whole bunch of entities looking over your shoulder, collecting your expenditure patterns, and doing whatever actions they see fit. For example, if you purchase a pressure cooker to use with traditional cooking, you might as well get a visit from the FBI. Or if your purchase pattern match up with those deemed 'suspicious', you might receive a visit, or perhaps have the entire bank account frozen pending investigation.
The trust that people are putting in bank is really not worth a dime, on the press of a button, the bank can block you from accessing and spending your funds. This can be done because the bank thinks it's a good idea, or it could be because of political pressure, or pressure from law enforcement. And using a centralized payment system like a traditional bank represents, you never know when their services goes down and are unavailable. In addition, many people who's gotten in trouble with the law, has seen their bank accounts being confiscated, and thus being unable to pay for their defense. This is a concious strategy that's been levied upon the culprint.
In short, it's the tremendous flexibility and freedom that's the 'killer app' of bitcoin. People will start to see this gradually, and as more services spring to life and make it easier to spend bitcoins, more people will flock to it.
The people of a country is the most powerful entity, it's important to realize this. The millitary, the police, the politicians is not the most powerful entity. If people act in a group, they're the strongest force. Always. Fear, lack of knowledge and a passivity towards life is what often prevents the people to act.
Have a look at how hungarians
stopped the internet tax.
In conclusion, bitcoin has come a long way, and it will continue to grow. The very fact that governments and banks are controlling our lives is very wrong. We're not free. We are slaves. This we must change.
Sure, there's perhapps no killer app built on bitcoin technology, like the spreadsheet was for the personal computer, that everyone needs to have immediately.
It is well enough that people of the nation do not understand our banking and monetary system, for if they did, I believe there would be a revolution before tomorrow morning.
- Henry Ford
Many people are not educated, they know in reality nothing about how the world works. And our overlords, intend to keep it that way, by making it mandatory to have large loans that you need to spend the better part of your life to pay off, only to have a roof above your head. In addition keeping control of the financial system, means that the overlords have power over you as an individual. You are not a free man.
So the ones, complaining that there's no 'killer app' - it's right there - in front of your nose, and it's called Bitcoin.
, stuff like war etc... not so good 
that's a strange choice for an open source project of such significance.
