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 still use it but if the price of bitcoin stable the next 50 years it's will not earn profits those who make bitcoin as an investment because there is no change in the value of a bitcoin itself. I think it was tough going