There are many factors beyond that. As a third party observer, yes it seems irrational. I watched my aunt go through it and nothing could change how she felt. She had inner demons stemming from being kidnapped when she was younger she just could not shake
I think this is a very valuable on helping see how bad it can get for some people
http://www.chicagotribune.com/lifestyles/sc-fam-suicide-misconceptions-kate-spade-0619-story.html
To shift your perspective on suicide, think back to the events of 9/11 and how you felt about the people who chose to jump from the Twin Towers before the burning buildings collapsed. “That analogy is not too different from someone who has a depressive disorder,” says Beeson. “It’s not true flames, but it’s the flames of something.
It’s easier for us to look at the 9/11 example and say, ‘Yeah, I’m not going to judge that person,’ but what if it’s flipped around and these are not real flames, but it’s something that’s very real to that person?” Given any of these circumstances — the burning building, the terminal cancer or the extreme, persistent mood disorder — Beeson points out, none of us really know what we would choose to do.
