bitcoin could be the world's currency, but maybe not.

bitcoin is now increasingly popular and some have adopted it as in the country of el Salvador, it is possible that other countries will also be interested and adopt bitcoin together and eventually become a world currency.

however, bitcoin is something that cannot be controlled and this could be a strong reason why bitcoin cannot be a fiat currency, also feared by governments. so the reason bitcoin won't become a world currency in my opinion is very strong because, fiat currency is always the most important.

but, in my opinion, both are equally important. For example, as a store of value, a medium of exchange, and a unit of account. so