[tame_deuces]

It is not really our fault you seem to suffer from the common misunderstanding that depressions aren't diseases. Suicidal thoughts (in people who seems to be physically healthy) is often a sign of depression.

We intervene in these cases in the same sense you intervene if someone has cancer. Dying from suicidal depression represents as much free will as dying from a tumor. And its a catch-22 because the while you can trust a cancer patient to take rational choices (hence accepting if he refuses treatment) you can't trust a suicidally depressed patient to take rational choices, that's how it works. If some errors have been made due to this - yes indeed there has, but the field is getting better at it.

It should also be mentioned that pregnancy can often lead to depressions, in some cases very severe ones. It has some bearing on the original question posed.