Predict the exact date of the collapse of the crypto currency can not be anyone. As for the consequences of such a collapse, they will be small. In Russia, only 25% of the population heard about the existence of crypto-currencies.
The collapse of bitcoin is very impossible because there are too many people owned Bitcoin right now and the numbers are increasing day by day with no signals of stop.So i guess want or not, they will stay there forever even there are too many hatred from haters were putting on them.
The only regret in this life is not buying more Bitcoin when Bitcoin is cheaper. Bitcoin is super-legal, and it will only perish because of the closure of the Internet.