Schopenhauer's idea of Will to Live was this idea that love is a tool used by life to reproduce children. He then said that people with whom we are likely to make the most "well-balanced" children with and we are driven towards are usually the kind of people that can't make us happy. But nevertheless we must suffer this misfortune because it was a way to sustain life. 

I know he offered a few solutions to this misfortune. But what was his idea on suicide with respect to the Will to Live? Or guess what I mean is what was his reason behind saying that we MUST suffer this biological trap?