Many people think that Bitcoin is like a bubble, so its price goes up rapidly to its peak and will plummet.
Bitcoin have bubbles, they comes and goes periodically. Altought behind that you have real revolutionary technology.
So it doesnt matter if there is bubble sometimes, bitcoin itself is revolution and there will be always price on that, what price? it depends, but i doubt it will fall in price in next 20 years (in big period of time of course)
That's right, but in my opinion bitcoin prices will fall in the next 20 years is very difficult, I think it will return sooner, but to reach the $ 20,000 as the end of 2017 is very difficult, maybe 20 years to it will not be achieved.