In my opinion, cryptocurrency isn't changing the world but those who believe in the movement and revolution are changing the world, enough of middle man, centralized systems and monopoly.
We need something unique and that's what cryptocurrency is all about. We need something global with a leadership but driven by demand and supply and not some detectorship investment that can be seize or close at any time.
I know fiat is necessary for the environment, but going digital will be better for everyone including the unbanked countries and locations.