When is suicide without cryonics ever rational, aside from rare situations where altruism demands it? Correct me if I'm wrong, but I can't think of any personal situation with zero possibility of improvement. Chris's suicide, like the vast majority of suicides, was irrational and sad.

The demonization of suicide by society and the effect that that may have on the suicide rate is a separate issue, and is less clear. It would be interesting to see a study on this effect.

If you, reader, are thinking of committing suicide yourself, please don't. Things will improve. There's no way things won't improve.