[chmike]

No. I don't think that and I didn't said that.

Cite? Just found this http://en.wikipedia.org/wiki/Suicide.

From the graphic shown on the page, not all suicide are caused by mental illness. That was my main point.

I have some doubts about the mental illness importance shown in this graph. Anyway, the mental illness could be the source of pain leading to the rational decision to end it by suicide.

[Moocat87]

I don't think 40-50% qualifies as a "small fraction."

http://en.wikipedia.org/wiki/File:Suicidecases.png

[chmike]

I must admit I was wrong on this assumption.