About 90% of all suicide attempts are accounted for by depression, manic depression, or schizophrenia. In this case apparently the "convict" suffers from depression. It was made an additional offense that he had not been taking his medication (no mention being made that, even from a rigorous psychopharmacological perspective no one claims that more than 70% of depressed patients are helped by medication).
Wojtek also seems woefully innocent in respect to the content of the mental illness of any one person. Let us assume purely physiological causes of mental illness (that is doubtful, but it will be of use to make the assumption here). But *one* depressed person will brood about his failure 50 years back to send out thank-you notes; another will brood about having been rude at a party; another will brood about her academic record, another will think his/her spouse is ignoring him/her. And so on and so forth. Ken M and Doug would explain this content of the mental illness in religious (i.e. psychological) terms, but it does have to be explained in non-neurological terms -- I would say social or historical. Wojtek's flippant (and to me personally offensive) throwing around of terms of mental illness cannot explain them at all.
Mental illness simply fails to explain *any* social act whatsoever. Wojtek is simply babbling.
Carrol