You need to get some perspective lol, bitcoin/crypto is a blip on the radar, practically irrelevant, in comparison to other energy use or CO2 emissions like from cars that is killing us. In fact, we generate more energy that goes unused worldwide than crypto even uses to begin with, so even that waste is killing us more than crypto is. Come on. It's like being more scared and upset that someone is threatening you with a sewing needle than the person who has a gun to your head.
But as wasteful as it is, most driving has a point besides doing it, and in a lot of cases there's no other option.
Everyone stops being able to drive, and a lot of people can't work, a lot of people can't eat, a lot of people can't get health care. The way our society is set up currently, without some of that driving people would die.
Crypto, as currently existing, is mostly used as an investment platform and there are a ton of way less energy intensive ways to invest your money.