Life is invaluable. Committing suicide doesn't solve problems, it creates new ones. Killing yourself changes life for your family and friends, who care about you deeply. It causes them great sadness, and they, too, may break down or think about ending their own lives.
It's horrible to go through immense pain and feel driven to suicide. But it's selfish to pass that pain on to hundreds and hundreds of people by killing yourself. People who are suicidal should try their best to get through their tough times. If they can push through that barrier, there will be a much better life waiting for them. The process may be hard, but I guarantee that afterwards, these people will appreciate their lives so much more.