Hence "care" rather than anything to do with ownership or compulsion. Just because being kind isn't mandatory doesn't mean it's forbidden.
There can be social implications of course. In the same way that I can't compel people to call me "Andrew", I'll notice if someone goes out of their way to give me the wrong name after they've been asked nicely to. And so will others around me. That's not a big deal if it's someone I know cares for me, but if it's someone who used to bully me who is trying to convince me that they've changed then it's going to make it harder for me to believe they will act any differently from before.