Cryonics simply assumes the eventual development of molecular nano-technology per Drexler is able to repair both the freezing damage and any medical problems to

Cryonics simply assumes the eventual development of molecular nano-technology per Drexler is able to repair both the freezing damage and any medical problems too. Not at all unlikely in a few decades, and almost certain within a century. As for who would want you back ... your children, hopefully. And if there's no repair before they die ... hopefully their children would want them back. Etc.