I completely agree that crypto will be the currency of the future. Cryptocurrencies are already used all over the world and constantly more and more countries begin to legalize cryptocurrencies and recognize them as official currencies, this is just a matter of time when the whole world will already fully begin to use cryptocurrencies with its full potential.
I believe that crypto will be the world's currency. However i think stable coins are more suitable. There are many things to do with the security to make sure that the world's economic can be relayed on it.