We exist on many levels, the individual being one of those levels. There are consequences on multiple levels, the individual being one of those levels. Every person and culture weighs these with different strengths.
The idea of suicide can be used for a great deal of harm - it can be the most effective form of emotional blackmail. (not speaking of my experience per se). It can be done as directly causing hurt and punishment. It isn't one thing which is clear to anyone who has had any sort of encounter with it.