Hitting defenceless children isn't an answer to anything. I didn't hit mine and she's fine.
The only time I did was when she was about 15 and she was talking to me while I was watching something on TV so I wasn't paying attention. She got angry and kicked me hard on the shin. I don't think she meant to do it that hard but any way I stood up and slapped her face. That's the sorry story of violence in our house.