It's not so much taboo as concern about the chaos and depression it leaves to loved ones. It's a cop out from a hellish existence that makes it even more hellish for the living.
Chaos and depression is temporary, they got on with their lives in due course

But departed at least get deliverance.
Eti cop out - typical liberal tosh, you believe those sob stories the press love quoting about relatives missing loved ones who killed themselves, don't believe it. They don't care, we are alone in this world, no one will provide for you, face your problems with you. Suicide should be looked at as an honorable exit from this nasty brutish place.