I think most users are involved in Bitcoin not because they belief in the technology, but because they hope the price will go thru the roof. So let us say the price would be at $900 for the next 50 years.
Would you still use and buy Bitcoin or would you leave?
EDIT: Poll added!
I would, stabling bitcoin in $900 is not that bad, it is better than to have nothing at all, it is still better to do signature campaign than surfing the net, posting on facebook with different pictures and videos, and got nothing in the end of the day, just wasted your time doing this stuff.
So, I am 100% sure that many people will still use bitcoin even though its price will not goes up anymore like they are expecting to happen this year, but, on the positive side, let's just hope that bitcoin would PUMP and its price won't be immobilized forever.