I don't think that traditional money will die just like that. I think that people all over the world would be lost if that happens in the next 20 years. In a 100 years, this will probably happen.
Until then, blockchain tokens like Bitcoin will need to coexist with the traditional money. Is Bitcoin and money the future you asked? Most definitely in my opinion! Otherwise I wouldn't be here!
Hyperinflation happens very fast so you never know. There are many example where you can see that.
Sure, but fiat's source is tyranny, specifically the power to impose your currency on others and make them play your game. Fiat is a fruit of human nature's darker side; I believe it'll survive as long as we do. The best we can hope for is to force it underground or relegate it to warlords.