The trouble with suicides is that no-one really cares about them, or at least that's how it seems to them. Some suicides are selfish, others aren't. I don't really think this chap was the selfish sort if he was depressed for an extremely long time. I think he was desparate for attention, and not finding anyone who gives a damn was probably the straw that broke the camel's back.
I know that the automatic assumption of suicides is that they are selfish, only thinking of themselves, etc. But mulling it over for quite a while, I remember a few times when I just didn't want to face my troubles and thoughts always meander onto how much easier it would be if I wasn't alive. The difference is when I feel melancholic I have friends to cheer me up again, and I believe that the same sort of feeling has probably been felt by everyone on this forum at one time or another.
I can only suspect that this chap had no friends, and was probably out of touch with his family. If he hadn't hung himself he would only have died anyway from the lack of any will to live.