Sorry, but it's already very mainstream. Every day there's more and more investors, large companies and known people who use and invest in Bitcoin. I've been using, following and investing a few years now and I can just say that Bitcoin's popularity has taken a big step forward and it doesn't intend to stop. It has found it's way to the news, the media and to mainstream markets and it's pulling more and more people to invest day by day.

Although it isn't at a 100%, it's going there very fast. The market speaks for itself and I don't think you can have a real argument against the rise of Bitcoin.