Is suicide the only solution to solve a problem?

Almost 1,00,000 people die in India by suicide everyyear.Mostly the number of males who commits suicide is more than the number of females.

I remember a suicide while i was studying in my college. She was my classmate and used to study sincerely. She rarely takes leave. Just two months before the final semester,suddenly a change was seen in her.She was not talking well, not eating well etc. Nobody couldn't find out what's the problem. Suddenly one day just before the examinations are about to begin, she committed suicide during night in her house, by igniting herself. The tragedy is till today, nobody in her house knows why she did that.

Friends, please share your views on

1. How to prevent suicides?
2. Who to take responsibility for the suicides, parents or children?