I'm really sorry about what happend.... But not every people who look happy outside are really happy inside, they just put the happy mask outside to pretend the world they are happy really.... Its just the prefect example that what u see outside is not all real....

I do think most of the people do think about sucide at some point of time, some think more often then other and some just fasinated by sucide i guess... But why they take that extreem step is really hard to say or judge, it may look really silly reason to other but it may meant a lot to that person and its really doesnt matter whether other having bigger problem for them and its all about the moment u have to deal with it....

But i guess for clinical depressed people, there no reason needed at all to take this extreem step i guess.. So end of it, no one really know why it happend...