The real problem is that Bitcoins will likely never gain enough acceptance because the whole thing about 'mining' and the like will always only appeal to the rebel and hacker part of society. I'm part of that crowd....but most people aren't.
It's the wrong crowd to really change our money system cause no one takes us seriously enough. And even worse, hackers and gamers don't even really WANT to be taken seriously.
So, it's a limited idea due to it's culture. Sad to say.
Two years ago people said BTC would never gain acceptance. Even I myself started mining two years ago and stopped due to limits in my hardware (when all I had was a machine that could barely run).
However 'hackers' are not the only people who need a service like this, although it is nice because it's hard to track and it allows for a lot of anonyminity. For many people it's great because you don't need a SSN, you don't need to worry about interest, and your money isn't managed by the government. Why wouldn't everybody want that?
I don't necessarily care if it's limited to the "tech" culture, I like it that way personally. However with the rise of the BTC many people have jumped in on the game and are sparking a real interest. It's nice to see people wanting to learn something new and all, but I don't necessarily care who the market belongs to.