Tenfold increase every year until semi-saturation. That's when half the people you know are using it. Enjoy the ride.
Or it becomes the myspace of cryptocurrencies.
it won't, myspace wasn't a protocol, you can't compare myspace with bitcoin.
you should compare it with TCP/IP, http, UDP, FTP, etc.
it might, eg pow very energy consuming vs nxt, emunie or peerCoin.
also much less features.
Also myspace was a protocol, being a form of information arrangement for receiving and responding to
if as many people would use peercoin are any other trashcoin they would need more energy than bitcoin would. Bitcoin (or any SHA256 coin) has highly energy-efficient ASIC miners, and no other coin as ASICs yet (and some are even designed not to allow ASICs, or not have nearly as efficient ASICs, as a 'feature') However ASICs by design are more energy efficient.
a faster confirmation time does not mean that the transactions go faster, as you'd need more confirmations to get the same 'safety' so that's just a joke. Having 'more coins' is also a joke because of infinite divisibility.
Any features that bitcoin doesn't have and altcoins do have can easily by added to the bitcoin protocol. It's easier to upgrade the protocol of bitcoin than it is to migrate millions of bitcoin users, industries, merchant and miners to accept trashcoin 2.3. And once Trashcoin 4.2 comes out they'll have to migrate all over again. It's just not going to happen.
Why did people migrate from myspace to facebook? simply, because they didn't have anything to lose from switching to facebook. But there's much more on the line when switching from bitcoin. Also, the network effect is exactly what caused the collapse of myspace. A lot of people were using facebook, and since a social network is not really much use without friends, they were forced to either join facebook or be left in a social desert.
The same is basically true for bitcoin and trashcoins and money in general. If tomorrow everyone would decide they no longer want to use dollars, the dollar would become worthless. Currency only holds value because you can buy stuff from it from other people. If enough people accept a currency than that currency has value. So, the more people that recognize any currency, including bitcoin or trashcoin or fiat, the more value the currency has.
Since bitcoin has the biggest network, and there's no altcoin that can do things that bitcoin can't do, bitcoin will stay. And the longer bitcoin is in this position the stronger the network effect gets, and the harder it will be to dethrone bitcoin.
. If it's the other part, then exactly what it says. This whole thing is pointless if you are not willing to trust yourself. 
