Well said duktig flicka. I don't think there is anyone here who wouldn't agree with what you said. We arn't talking about using punishment to inflict abuse, or to excuse abusive actions.
There is a difference between abuse and punishment, and at times there can be a fine line.
That's where safe words come into play, and only play with someone your comfortable with.
To punish someone, you don't make them do something, or do something to them that they like. If the person being punished is a pain slut, you don't do anything that would cause pain as a form of punishment, you use an alternative. If that person dosn't like cooking, then get them to cook a banquet feast for example. That is punishing the person, not abusing them.