Is it okay for my dad to take his anger out on me when he's drunk?

It is not ok, he has things in his past which causes him to become angry. It has nothing to do with you and everything to do with any underlying regrets he may have. Let someone you trust know so they can help you.

No it's not okay. Father or not, nobody should treat you this way. I don't know if you're in the position to talk to him about it when he is sober, but you should try communicating with him how hurtful that is. If that doesn't work, don't be around when he is drunk.

No. It is not ok to take his anger out on you when he's drunk. He needs help. I hope your dad can get some kind of professional help with his anger and his drinking. It is not a good idea to take your anger out on anyone. It is better sometimes not to react, but to stop and think before you react and get angry. But first, your dad has to admit, that he has a problem, and that is not always an easy thing to do. We are human beings, and it is hard to admit sometimes that we need help, and that we have problems. I wish you the best of luck with this situation.