It doesn't lead to suicide. It predisposes one to suicide, but the trauma isn't insurmountable. What causally leads to suicide is the choice to take some kind of weapon and use it on yourself.
You seem really invested in this idea. I think that we are at odds on the idea that mental damage can be insurmountable. I could speculate as to why, but in the end I think we should just call it good.
Cheers.