It's a matter of whether you see the self as fundamentally in relationship to other selves or not - whether you see the boundary between self and the world as relatively permeable, which makes you "interdependent" (collectivist) in outlook, or relatively impermeable, which makes you "independent" (individualistic).
The independents are the ones who tend to commit suicide. I'm not against this way of being in the world. Individuals have brought us many treasures. You can't just say that's a bad way of being in the world - it's not. But it's not everyone's way of being in the world.