I think the underlying issue people aren't seeing, or perhaps are trying desperately to ignore, is that this kind of stuff is pretty much on the climb. More and more troubled youths are killing themselves for a variety of reasons. While we can speculate on a decent number of them and explain the causes and consequences, many others like this are at present unexplained.
Or rather, they're explainable, but nobody wants to stop and figure out why. You'll have people jumping the gun to blame media (particularly video games and music), but it is more likely there was something going on in the school or at home.
I'll never understand why people always say Suicide is a cry for attention. It certainly CAN be, and most likely has been in the past, but that doesn't make it the default reason people commit suicide. I know I certainly contemplated it during a few years of deep depression (that I could never figure out the source of). Not for attention, but to stop what I felt was endless suffering and unwanted burden.
Usually, suicide is a way out for people who don't know how to handle whatever it is that's driving them over the edge. People either won't help them, or don't see the issue (especially if said person can't/won't communicate it). In that regard it might be a cry for help, which isn't the same as crying for attention.
Some might call it natural selection, I see it as a growing problem we're not actively trying to find a solution for. In fact, a number of people in this thread have made it quite clear they're more than happy that people are killing themselves for no apparent reason.
Pity natural selection can't work it's magick on them, too.. but that's just my frustration and exasperation talking.