Yes there are. It is well documented in other countries such as Venezuela or Argentina and some vendors even prefer cryptocurrency because compared to their national currency it is more stable. In addition, there are significant remitance and cross-border payments done in crypto where banking or FX controls make dollars hard to access in countries like Venezuela and certain regions in Africa.
Day-to-day transactions at the street level may not be dominated by crypto or even a majority, but it is a growing nontrivial minority in a lot of places especially emerging markets.
> countries like Venezuela and certain regions in Africa
So approximately none of the world's money and only in the most desperate situations.
I'm all in favor of some kind of vehicle like this, a currency supplemental system that is decentralized and safe. What I don't give a shit about and what is obviously useless are the "usecases" people keep coming up with beyond currency. The absolute #1 best usecase is ticket NFTs - proving you did something on the network to the outside world. As soon as you need to prove to the network something you did on the outside world - 99.99% of the ideas people have - you are back to uselessland.
