Forbet, I can relate to all of this. I feel like our situations are very similar. I feel like I am done all the time. Then I think about how forcing the issue one way or another won't REALLY change how I feel. I'm sorry you are having to deal with this...it just [censored]!!
My issue is time. I feel my wife making small steps in the right direction. I feel like if I can just hang on and keep up with things (GAL, DB, etc) that she will come around in time. What I am not sure of is how long it will be before I just don't want to anymore. I mean...even if she does come around, how will I feel about her at that point. I have been trying to talk myself in to wanting to keep trying by reminding myself of the good times and looking at pictures of us happy together. Sometimes that makes me sad, but I also feel that if I didn't do it every once in a while I would lose site over why I want to work it out to begin with.
I am not sure if I have any advice for you other than to say that you aren't alone...I'm feeling it with you. I think sometimes you just have to sit still and calm yourself in the eye of the storm.