bitcoin will never be able to suck all the fiat money, they can just print more without problem
also fiat is already worthless, but you're obligated to use it for the majority of things
if you mean collapsed, i don't think so
how can it be worthless from now onwards .the whole global is running on fiat and some places accept bitcoins and other digital currency .and it is long way to go when fiat will become worthless.
Fiat is worthless. When government print it the value is automaticaly decrease, becouse of inflation. I am sure if bitcoin price reach $10.000 USD fiat will become worthless. When fiat value is decrease everytime bitcoin value is increase everytime becouse of deflation. So I think smart people will leave fiat and use some thing that give them benefit and safe their wealt. That is my opinion.
I agree with your opinion. Fiat is just a type of paper which the government allow to make it valuable. The more government prints cash, the worthless Fiat can be. However, Bitcoin is different because the creator knows how to limit the amount by making the halving system. If bitcoin reaches $10000 USD (current USD prices), it still need one more factor in order to make cash worthless: the adoption. The increasing in number of people using Bitcoin will absolutely destroy FIAT