Anyone hitting anyone else in anger, especially stronger on weaker (regardless of sex), is wrong. From the male perspective: if you can't control yourself, or the situation, leave. It's not rocket science. If you know that you have personal control issues, and you still fall prey to provocation, then you deserve whatever punishment is due. "That's the way my momma/daddy/uncle Jim-Bob is/was" is no excuse. From the female perspective: if you can't control yourself, or fall prey to one who can't control themselves, but can't physically leave the immediate situation....take your lumps (one time only), wait for he/she to fall asleep......and leave. NEVER look back; never second-guess....it'll never "be better", no matter how many times they say they're sorry. I know that there are exceptions/extremes, but this is a main-stream response. For the others, wait for them to go to sleep.....
We are who/what we want to be; we are the keepers of ourselves, and the only ones who can effect change in our attitudes, decisions,situations, or personal behavior.