But the 38 year old husband, the subject of the article, who was in an unstable mental state to the point where his wife felt threatened and left for the safety of their children was certainly not in command of his mental faculties.
Someone who is schizophrenic and bipolar and experiences a psychotic break after drastically changing their medication regimen is not in a sound state of mind, and they would be the first to admit it once their condition improves.
First you said they can't do it because they're mentally incapable of making the choice, now you're discussing whether a suicide is "clearly defensible". It doesn't matter if a suicide is "clearly defensible" or not. People don't have to defend their choices to you. That's the point of having the freedom to choose.
Where did you get that idea? This happened in the UK, which has a public health system.
Well, that's an enormous 'if'. Yeah, maybe it's different in that case. But it's not the common case.
Anyway, I didn't consent to being born, why shouldn't I be able to choose to stop living?
The right to self-determination derives from an assumption of someone being in a clear state of mind, that's why we have plenty of conditions under which we withdraw that right.