Haha i don't even know if the world will exist after 100 years. So, no one can give the right answer to this question. No point of thinking if it'll survive.
Haha, Nice answer by the way but we should stay optimistic man. What I exactly keno is that this currency is going to stay in world until there is internet and people alive for consuming bitcoin. I am damn sure about its capacity of ruling world for a long time.
Bitcoin has been there for 10 years almost and still no other coin has been able to beat it even once which clearly shows the power of bitcoin for staying in the economy.