Are you saying you don't care if he kills himself?
In all honesty; no.
Killing yourself is the most selfish and selfless thing that you can do. If you kill yourself, you're only putting yourself into through, you're not thinking about the consequences of it. You figure; ohay, my dady is meen, i go kil myself :((((
And then what happens? Daddy gets upset and gets an alcohol problem, mommy goes angryface and her and daddy argue. Your siblings go into a great depression and everything goes haywire.
How do I know this?
Because I've contemplated killing myself more times than is humanly healthy, and then I realized; stuff, just because quite a bit sucks right now doesn't mean in a few years it won't be good.
If you're going to kill yourself, go for it. If you call me at 3 in the morning saying "I got a noose tied and I just wanted to say goodbye" I would tell you "it's a bad idea" or "you probably should think about this first" I won't tell you to not do it, because if you're at that point in your life then you know what that means? It means I'm not a good enough friend to you as to mean enough to you to wake up the next morning.