In response to:
I don't understand why a man would beat on the woman they "love", then apologize profusely and tell her how much he "loves" her and that he could never live without her. Would you file this under insecurity?

Men could say the same about women. I know a few guys who are treated like dirt from their women, and they don't do anything about, they just take the beating. No no, there comes a time when you must call the cops and protect yourself, and if you are in danger of your life, I don't care if you're a man or woman, you fight and you fight hard. Then you put an order of protection (restraining order) against that person. But to come back and sob and give the "sorry baby" story, it may work for awhile, but in the end you are the one that looses.