People love to pontificate
without fact checking.
You seem ignorant to the fact, that there are a lot of people who can't even use banks or other payment-systems.
And they can't use Bitcoin either, because it has no use case and they can't mine it.
I am talking to the filipinos about it. My neighbor's brother is developing social media apps (Lifebit) and hobnobs with the local government officials and tourism head. My neighbor said he thought about building a mining farm, but really didn't have enough capital to risk, and he says he just doesn't see what he would use Bitcoin for. He and his wife (they have one son) work virtually from home for American companies, his wife doing CSR for swimwear company in Florida and he does foreclosed real estate listings management. They are paid via odesk.com deposit directly to their local bank account (Google "freelance work online"). Any one who has a legitimate need for a local bank account, can get one. My gosh one visit to the bank here and standing in line for an hour for a teller tells me that rapid expansion in the banked is occurring.
Those unwashed who don't have a bank account, don't really need one as they pay for everything by cash.
I am sorry to inform you that any near-term (before 2024 at least) move to a new currency will be driven by westerners, Chinese, and Japanese. We are still guiding the world (at least until China takes over as the new financial center of the world by 2032). The developing world is ... well developing meaning they are learning from and leveraging us.
Note only because home mining in northern cold climates makes the electricity cost free as the waste heat displaces costs to heat the home (an economic advantage over an ASIC farm).
You also don't realize, that we don't want to convert back to fiat. We want merchants around the world to accept Bitcoin.
But the merchants have no (non-ideological, delusional crap) incentive to follow your desire. The volatility of Bitcoin is extreme compared to their national currency unit-of-account. Unit-of-account is a critical property of money as a currency, less so as a store-of-value which is why you see Bitcoin as a speculation investment predominantly. Merchants are not investors, they have to mitigate anything which impacts the reliability of their (in many industries very thin, thus fragile) profit margin.
I don't want to buy bitcoins with fiat, send bitcoins and the other person sells the bitcoin for fiat. Just because that is the way, it is now, doesn't mean it won't change in the future.
Ah the "change comes from mysterious magic wands" illogic.
Serious software developers don't waste their finite coding years chasing rainbows.
The internet didn't have porn, when it was invented. It developed. The internet today is also not the same as 5 years ago.
More hyperbole that doesn't address the point that the internet has a laundry list of radically improved human benefits use cases. Bitcoin doesn't. Bitcoin was invented 6 years ago. Bitcoin reached critical mass in 2013 when every person in the world heard of it on mass media. I would say the internet reached critical mass
by 1997 or 1998 when Yahoo become a phenomenon. By then there was porn and many other compelling use cases.
Your estimate about 5 days to convert and 2-5% fees is also just way of, of what it takes me, to convert bitcoin.
Try moving $1 million through the banking system. He wasn't referring to converting your $3000 transaction.