Serious question: how would the US financially survive a multi year pandemic in a bitcoin world? Remove the cynicism about government and pretend they actually want and NEED to print 10% more USD and distribute it to destitute individuals, in this hopeful future, are those people left to die?
You need to understand that there'll never be a complete "bitcoin world", I'll take you to mean a world were Bitcoin is somewhat the only currency there is, it wouldn't happen cause Bitcoin is decentralized and that means the government can't control or print it, there will always be fiat currencies in use, Bitcoin would definitely go mainstream, but governments will always have their fiat at their disposal, print it as they deem fit and create inflation, but the best part it, no government will ever control Bitcoin or print it in their favor, the users will continually enjoy the freedom and personal-control inherent in the network.