Maybe I am crazy. I just thought of it last night, maybe that is a bad idea?
Reason being... last night he asked me "I am doing better now aren't I"? Yes, he did fine last night. I am starting to feel guilty again about wanting to leave. I guess one decent evening w/o fighting doesn't make a marriage.
I went thru this a lot in my marriage. It was horrible, my ex was an abusive alcoholic, mostly mentally and verbally but on occasion, physical. I would say our marriage was 80% bad and 20% good. Wow, 20% good over 10 years, sad. With that being said, I know how you feel, there are those small spans of time, where you might be having an upswing or a good day. It's those days that soften your heart again, make you think back and remember the man he used to be and the man you fell in love with. In those moments you start to think that maybe he is changing back to that, maybe he realizes how he treats me and how much I care for him and will be nicer to me. And then in a blink of an eye he is back to being nasty, mean and verbally abusive. He won't change, if you have being dealing with it this long, this is his true personality, this is who he really is.
It took me a long time to realize that I deserved better, that no matter how much I loved him, no matter how much I cared I didn't deserve to be treated like that. I didn't want to fail at my marriage, I too didn't want to just walk away, I had after all vowed to love him through better or worse. BUT, there is a difference between loving someone when times get tough because of things you have no control over. Financial crisis, family issues, sickness, etc...are things that can put a strain on a marriage, but if you are both loving and respectful to each other then I don't feel that is a good reason to just quit and divorce without trying everything first. When you are with someone who doesn't value you as a person, who treats you badly, is abusive, that is not ok, that is not loving someone thru the worst of times, that is being with someone AT THIER WORST!
I hope that made sense, and I feel bad that you feel obligated to stay because he is sick and needs help. His family doesn't want to help him because they know the real him and were strong enough to say they aren't going to accept being treated badly. Being sick is not an excuse for behaving badly or treating others with such a lack of respect! Shame on him.
You deserve better, I think you know the answer, I think you are staying not out of love, but just because you feel bad he is sick and needs help. I would move out and hire a nurses aid to come to the house in the evenings to help him. That way you won't feel guilty about it. I bet you feel a big sense of relief, because you know he will have help and you get to live stress free. Watch how fast you start to feel normal again after being away from him. You will slowly start to realize your self worth again, you will start seeing that you put up with way more than you should have and it will make it that much easier to move on and away from him.
Good luck and lots of prayers and hugs coming your way. Feel free to PM me if you need any more kick starting or ego boosting. This will not be easy and I honestly could not have gotten thru it without my friends and dad helping me and telling me I deserved better. Every time I felt like caving and taking him back I would just call one of them and they would remind me of the rough times or the embarrassing things he did to me an I would get over that really quick! You can do it, you deserve better and you will be so much happier away from him.