I wouldn't associate him as a "wrong one".. it's not like he's hoo-bangin on the weekends..
plenty of kids are going through insanity at that age, even if they look perfect on the outside.
I don't see why you'd see one as being wrong while the other as being OK. People are genetically predisposed to certain behaviors. Some people are violent, hyper-sexual, while others can be depressed and unsociable.
No better, no worse. That's just who they are. I'm sure everyone has been in a situation where they condemned someone's behavior and said "I'd never do that." You're right, you probably never would. Different people are tempted by different sins.
Everyone has to resist as much as possible and meet somewhere in the middle. Now whether the kid is mentally sane or not is a question that currently he only he knows the answer to. Obviously he's not going to admit to trying to kill himself without a reason or excuse at that age. It's looked down on in Western society so he'll come up with an excuse or an actual reason if he's honestly insane.
I firmly believe it is his right to kill himself. It's a very basic human right and a more logical right than the one to have a child (in which you receive no consent from the child obviously). Apparently this kid's parents are not around to raise him yet no one in this thread has condemned them for having a kid and not raising it. Don't know the back story on that though.
Still, I don't see how anyone would have sympathy for the kid. Even if he's telling the truth and is insane, he'd probably be better off dead. Those people tend to lead tragic lives and many kill themselves after years of failed treatments.