I think focusing on environment when it comes to cryptocurrencies is not very productive. We waste a lot of energy and if cryptocurrencies could live up to thei

I think focusing on environment when it comes to cryptocurrencies is not very productive. We waste a lot of energy and if cryptocurrencies could live up to their promise maybe the energy cost is worth it. The main point against them is that the only use case they have is going around financial regulations. Buy drugs, transfer money to a gambling site, accept a ransom or go around capital flow regulations in your country. There is absolutely zero reason to use it otherwise. Some of those regulations might be unjust or bad but then we should address that. This is even before we enter more imaginative scam attempts based on popular blockchains.