There's a difference between sacrificing yourself to save people you love and killing yourself because you are deeply unhappy. The later is generally viewed as

There's a difference between sacrificing yourself to save people you love and killing yourself because you are deeply unhappy. The later is generally viewed as a mental disease that can be assuaged with therapy and allow the victim to be happy again. Also, I know there are a lot of other reasons to kill yourself (onset of terminal disease, etc.) but I would wager the vast majority are rooted in unhappiness.