this is such a stupid topic. I'm sorry if by stupid i am offending anyone. but it just surprised me, the fact that in the XXI century we are still debating this topic.
first of all because no one should hit no one, and second because it is just an obvious answer: if you get hit, you defend yourself, but not by hitting back... ffs... XXI century... wonder when a topic about witches and inquisition will come along, cuz all of us should burn to death here