Have you taken the domestic abuse quiz? Take a look through the quizzes on this site, it's in there. Somehow, you need to understand that what he is doing is wrong. Your anger and fear are trying to get you to leave, and you are ignoring them becuase you want to help him. You can't. By staying, he is enabled to do these things. By leaving, you make sure once and for all that he can't. You have a choice to change your life. He WILL NOT CHANGE. A few people here have been in that same situation, so we understand. If you came looking for advice, I think you've found concencus. Look out for number one (YOU, in case you've forgotten!) and get out of there.
Peace be with you, we're all sending you strength.