Users of bitcoin number are growing day by day so bitcoin will never die, the price will get higer too and one day it will be used in business and then it will replace the fiat so accept this idea and try to earn bitcoin. :p you will need it in the future.
never say never , bitcoinn are indeed possible to dissapeared and dead ,
noone can guarantee about this , about how bitcoin will last forever or at least survive for long time ,
i don't know about technical things that could make bitcoin dead ,
but one thing that i know bitcoin run if there is internet , so once internet goes down so do bitcoin.