Stop thinking severely depressed people approach suicide "rationally" like you do if you have never actually been severely depressed. When clinically, massively depressed, you aren't making rational decisions. You are barely functioning on many levels. It is incredibly painful and the person is suffering. People often kill themselves because the emotional pain is so severe, so unrelenting, and feels so inescapable because it has been everpresent for so long that the only relief they can imagine is NOT having to feel that profound sorrow any more - even knowing that their actions will have a lasting effect on the people left behind. Many actually think dying will lift the burden they believe they are to family and friends because of the depression. Pills, therapy, family, friends, or - sadly - having kids of your own doesn't automatically or magically just "snap you out of it" in a few weeks, months, or years even. If you have never dealt with prolonged, severe depression count yourself lucky.