For me, the only reason cryonics appeals to me is that I really really want to see the kinds of things humanity will come up 100 years down the line, 1000 years down the line... it's unimaginable but I really want to see our future and experience it. Hopefully by the time I'm in my 50's, cryogenics will be far more advanced and it will be a feasible alternative to simply disappearing.