As a 19 year old student living in Hungary cryonics is way back on my list of life extension related things to do. Nevertheless I think cryonics is a great option and I'll sign up as soon as I figure out how I could do it in my country (Russia being the closest place with cryo service) and have the money for it.

As a side note, I think cryonics has the best payoffs when you've got some potentially lethal relatively slowly advancing disease like cancer or ALS, and have the option of moving very closely to a cryonics facility.