That is not the only useful thing which which has come out of cryptocurrencies. There is also Filecoin, which provides a similar service to S3 but at a wildly c

That is not the only useful thing which which has come out of cryptocurrencies. There is also Filecoin, which provides a similar service to S3 but at a wildly cheaper price point. There are also more examples of actually useful things you can do today. However, when the OP says something like there isn't a single use it doesn't take a basket of use-cases to refute them, it just takes one example. Do you really think that $12.75B is going into pointless NFTs?