Hasn't bitcoin already gone mainstream?
I didn't loose hope that this will happen once in the not too distant future.
It would be enough that some really ''great player in on line payment industry'' like PayPal add BTC as a payment option, and bitcoin will become mainstream in very short time.
Unfortunately, this is unlikely to happen because the BTC is actually competition to PayPal.
Bitcoin has a lot of opposition but sooner or later we will become mainstream, there is no doubt about it.
Turning point will be when people realize the benefits of using Bitcoin compared to other on line payment option.
Paypal seems to already be looking at implementing it in some capacity. It's not really a threat to it because bitcoin needs payment processors and that's what they'll be.