I'm afraid that the reason to human suicide is simply, in most cases, to put an end to the pain these human feel. The brain is an extreamly complex "organ" wit

I'm afraid that the reason to human suicide is simply, in most cases, to put an end to the pain these human feel. The brain is an extreamly complex "organ" with many many different potential points of failure. Attempts to find a reason for abnormal behaviors by such type of guessing (finding an evolutionary reason) looks to me like our ancestors did when attributing to gods will unexpected natural events. It's not impossible that depressive behavior is a natural brain protective measure (thinking of burnout here), but this reasonning really looks like guessing and as truth seeker, we shouldn't accept the risk to be wrong on this.