And anyway, for some people in certain circumstances committing suicide may be a rational action.

That was exactly my point. I mean, that sooner or later someone would write something like this.

Now imagine a depressed person reading that, and thinking: "even the smart people on LessWrong agree with me" (because for a depressed person if someone could be in a situation where suicide is a rational action, they believe it's them in the first place).

OK, I give up. Seems like explaining why I believe discussing something is wrong only has the opposite effect.