People around me often sign up for cryonics, and say that it is very important. My guess is that this argument for it, heavily inspired by Waitbutwhy’s much longer piece, as well as years of talking to people around me and reading their blogs, is correct: One day people will probably live much longer than they do now. Probably we will work out how to beat the diseases of aging, as we have many of the infectious diseases. Eventually dying at age 90 of heart disease will seem as much of a needle...