It is said that bitcoin will destroy the fiat system but i believe that if this happens the world will change completly because banks and a lot of things will go out of market.
I think it will not happen and it is not easy because there will be pros and cons so not all use bitcoin .. all will deal with fiat and government and it will be contradictory and will not be silent because bitcoin problem is fiat, bank and Government .. so it is not that easy and it is not possible, bitcoin can only be used and accepted by some people and country only ..