Okay, this post is just plain rude. :/ Will all do respect, you have no idea what goes through a person's mind when they're seriously contemplating suicide. I know you haven't because if you've ever been in that situation you'd never have said what you did.
People who are honestly in so deep that they feel killing themselves is the only solution need help. I don't mean that cruelly, I mean it very literally, they need help. What they DON'T need, however, is criticism and ridicule and comments like "it's selfish", "you're a failure", and so on. All that will do is make it worse.
On a side note, some people think it's cool to talk about committing suicide, cool to say that they've thought about it / attempted it / cut themselves, whatever else, but the vast majority of those people aren't being truthful (I'm not saying all of them, but quite a bit.) For those who have actually experienced it, it's a private matter that they don't want people knowing about.