The majority of posters here are in the prime demographic to suicide, and are indeed susceptible to arguments in favor of far-fetched premises without evidence, i.e. revival of cryonicists by a machine intelligence. However, their strong belief in this prospect will insulate them against suicide attempts just as devout Christians are protected by their belief that hell awaits suicides and that heaven is possible for those meeting a natural end.
The majority of posters here are in the prime demographic to suicide
Did you mean that the posters are drawn from a demographic which has suicidal tendencies (young adults), or that Lesswrong is a demographic which has a higher proportion of people with suicidal tendencies?
I sometimes have thoughts of suicide. That does not mean I would ever come within a mile of committing the act of suicide. But my brain does simulate it; though I do try to always reduce such thoughts.
But what I have noticed is that 'suicide' is triggered in my mind whenever I think of some embarrassing event, real or imagined. Or an event in which I'm obviously a low-status actor. This leads me to think that suicide might be a high-status move, in the sense that its goal is to recover status after some event which caused a big drop in status. Consider the following instances when suicide is often considered: