I do agree with Mato Kinze that it depends on your attitude to each situation that depends on how much you learn from it. Although, to me, you don't really need to suffer to learn lessons, you could learn more from being in a state of peace and develop way more than if you were in a near constant state of suffering and non-enjoyment. In my experience, there are plenty of people that have committed suicide and are perfectly happy on the other side, they weren't punished (only if they punished themselves to what they did to their friends and family that mourned their lost life), so I think suicide isn't the answer, but if a person really feels like that is their last hope, then I wouldn't disagree with committing such an act. You don't have to go through pain and suffering to learn lessons, you could more easily learn the lesson or lessons from a state of happiness and joy than you could from a low state of boredom and suffering.
Just my $100.