Firecricket people who drink problematically like your husband does , often have low self esteem. Consider the possibility that every time he looks at you he sees himself as a failure of a husband and a poor father.
everytime he looks at other woman he might think I might be bad but at least I'm not as bad as her. At least I never got into armed robbery.
I noticed as my ex husband's condition worsened how he started to hang around with people he had claimed not to like a couple of years previously. Actual scum bags. Was he hanging out with them because he liked them all of a sudden? Or because he looked good compared to them? I don't know.
An alcoholic 's brain is a maze. I wouldn't bother trying to work it out. Maybe new woman isn't an upgrade at all but a down grade so he can feel better than.
you are not worse than/better than other woman. You're just different. You and your husband are on different paths. He probably doesn't understand you either!!