I've never gotten the thinking on the whole cryonic thing, with people being frozen after they die. I mean....you're dead. It's a little late at that point, isn't it? So you've gotta wait not just until whatever disease killed you is curable, you've gotta wait until somebody cures death. It's not quite as simple as just jump-starting your heart long enough to inject the disease-cure and letting it work until suddenly you're alive and recovering. Especially since terminal diseases tend to ravage your body and organs before finally finishing you off.
So to be realistic, you'd have to be frozen sometime before you died - long enough before that your death wouldn't be like imminent after you were thawed and resuscitated. But if you're not so far along that your death is imminent, how do you really know how much time you have left? You could be trading a couple of good years that you could have enjoyed living, to wait for a train that ultimately don't come. And there's also that freezing a living person is, well, murder, and a permission slip isn't a defense (just ask Armin Meiwes).
mai sperm donor... 
