Not for mental illness.

The only issue I have with suicide for mental health reasons is that it is too taboo and therefore you can't express your suicidal ideas. There's also this myth that mentioning suicide in the media will prompt it in others, whereas suicide foundations recognise that there is no evidence to support this. It's only glamourising suicide that can cause problems, any frank and explicit discussion of it will only turn people away from the idea. And here I'm talking about self-styled suicides, not the legal forms such as euthanasia.