His blame is more than just sticking with her.

Your mother wasn't the only who was drinking.

Your mother wasn't the only one who was beating up another person.

Your father was right there with her. Actively participating in the fights.

I have been there. When my ex was out of control, I wasn't fighting with him. I was looking for a way to escape. I was calling the cops. I was taking the kids and leaving. I didn't fight back. I just got the he!! out of there.

Anger isn't healthy when it is having such a negative impact on your life. And it is.

And in a few years, when you have matured some more, you will see that. Seriously, get the therapy.