I can't recall the name of it, but I think there was documentary about people jumping off the Golden Gate Bridge. The filmmakers interviewed a bunch of people who had survived their attempts, and most or all of them regretted jumping as soon as they were airborne. I'm in favor of a right to suicide (not to be confused with thinking it is a good idea in the vast majority of cases) but I think anyone who is really set on going through with it should be encouraged to do so by means of a slow-acting poison that has an antidote, or some analogous method, just in case they discover an unexpected revealed preference for living after beginning to kill themselves.