It reminds me of people who lash out with violence because they never 'attached' emotionally to someone. I would say there's nothing wrong with your feelings but there would be something wrong with ever hurting something or someone just to feel that feeling. do you know what I mean? Kind of interesting, I've never heard of the physical sensations, but I have a bad habit of laughing at people when they get hurt. I don't know why...it's not because I really think it's funny that they're hurt it just makes me laugh for some reason.
Good luck.