Years ago, my neighbor asked her husband to leave. (As best I know, alcohol was not involved) She felt guilty about it because she made that vow - you know - until death parted them. She asked me what I thought.
I said if you're think you're never going to be in love with him again, isn't it better he is free to look for someone who could be? Having him jump through hoops and go through marital counseling and at the end have it still not work would be delaying the inevitable.
I have a friend who went to marital counseling and was finally frustrated enough to ask her [then] husband why he wouldn't do the exercises the counselor suggested. After months of stringing her along, he finally told her he didn't want to fix the marriage, he just thought the counseling would help her accept it better.