I don't even believe in that non sense that bitcoin is dead ? It has been a few years they said that ! But it didn't came true because there is no big reason that bitcoin can be possibly dead even it is not accepted by the government, bitcoin cannot be dead.
Bitcoin is still very young and is still growing and it keeps getting stronger everyday. It is impossible that it will die at this point of time but it can be possible 50 years from now when there are new kinds of alternative currency that is much better compared to bitcoin. But right now let us enjoy bitcoin ans also enjoy the profit that we can make from it.
That is reasonable thinking, bitcoin is young and its far from any kind of death. This is an odl topic, back in the days this threads could create some fear among forum members and maybe even start some panic selling situation. Now bitcoin is much stronger and we can see this threads as attempt to disturb community, bitcoin is still alive and only some new technology can make bitcoin disappear, but when will that happen, in 50 years like you said maybe.