if all switch to virtual currency, then what about real money conditions whether each country will stop making real money in the future I don't think so ... !!?
Probably, it could happen but government will deny it because as of now, they make steps in order to control the cryptocurrency. Yet, Satoshi wants to have decentralization but not with the central government. Making real money will be stopped if the government itself will acknowledge the virtual currency. But for me, it is good to have both of these currencies since they are helping also the economy in different terms.