Bitcoin can survive if bitcoin is still received as a medium of payment, although not all countries accept it. But bitcoin is one of the coins that keep on rush to have it
If bitcoin will become a mode of payment then it is very possible for bitcoin to stay for long because knowing that bitcoin is a source of income and also a mode of payment then people will like it and they will use bitcoin and take that advantage and the life of bitcoin will become longer and there will be no problem for the life span unless bitcoin will have some big problems on itself.