Most people will be using ebanks, there will be fees on everything, and ultimately, we won't end up fixing anything about the finance system, if anything, we'd complicate it further.
Bitcoin needs a killer app, something exclusive to it that takes advantage of it and makes people buy it to benefit from it. Personally, I do not think that advantage comes from spending it at merchants. We need to specialize it to where it's useful: underground markets, anonymous probably fair gambling, remittance, and anything else you can't do with fiat easily. Then accept the fact that that's where cryptos are useful, that's their value, and move on.
Sadly, I have to head to work. However, I like this idea and cannot argue with it. Concentrating on the core areas where cryptos shine and accepting any other side bennefits as they come along makes sense. Hey, if it really catches on and you need them to purchase day to day goods- great. If not, they certainly have a place.
It also is important because people will take the time to learn the basics and this ins and outs for underground markets, gambling, remittance and likely a few other niche areas. We have already seen hoards of people who would otherwise never touch something like this buy on the silk road (for example.) I think we have proof that people will take the time to learn about it for that or for gambling at a minimum. They would also undoubtedly be comfortable with calling up the pizza joint and paying out of that same account. There will be some adoption for various reasons in many portions of the population. I just question if it will ever be as main stream as Mastercard.
Again, I recognize that there is some advantage of these currencies and I do not think they are going away. I believe that they will appreciate in value and that there are sections of the economy where they shine and may well replace fiat. I admire the fact that the community pushes for acceptance; it really is the only way to get it on peoples radar. I just think we are further away from it being a commonly accepted, widely adopted system of trade than many people seem to believe.