Why do people think I'm crazy for heating my home with cryptocurrency?
It could be because theyre unfamiliar with cryptocurrency, or they dont like it, or they know that mining cryptocurrency has become unprofitable for many people. Or they dont know how you put up with the noise that mining hardware often makes. Or some other reason. Standard disclaimer: If you really need to know why other people think the way they do, then youre going to have to ask them. Strangers on the Internet can only guess.