Crypto mining is (mostly?) total waste… Proof of Work by doing hard but useless calculations and using it as kind of currency is like travelers on a desert world use water as a currency - but by intentionally spilling it 🤦🏻‍♂️

Great cryptocurrencies does not need power hungry hardware. Eg. Nano (XNO) have a secure network error or using around 17 000 000 times less energy per transaction.