I just happened to see this thread and thought I would see what was going on. After reading it, I was shaking cause it sounded like me and my wife. Your comments about your husband had me looking at the location wondering if my wife had found this site. I get fussed at for "playing computer games" and not helping with the boys. My wife and I sat down and discussed the issues. She's not one for talking about problems, she'd rather just go to bed and forget it. I need resolution (do you see the storm that follows). We talked about separation at one time, but never took it that far.
My dad always told me that if I ask a girl to marry me I should be ready to commit 100% whether she is or not. I imagine its the same for women. When I married my wife I was totally committed. There are many days when I feel like I'm giving 110% and receiving 0% (there are days she probably feels the same).
For instance, with everything I do I don't get a lot of free time. We are on spring break now at my school. Instead of getting to sleep late for a change; I have to wake up at the same time (5:45am), make her coffee, and take Peanut (youngest son) all the way across town to day care. I don't like it but I do it. why?
One, because I love her (just like you said you love your husband).
Two I made a promise to her and the man upstairs to take care of her no matter what.
Three, as a school teacher I see the effects of split homes everyday. Many people don't think that it bothers the kids. I can give examples that would flood this forum that it does, they just don't let the parents know.
If the relationship is not abusive (physically or verbally) then it is worth saving. I'm sure someone has told you to watch the movie fireproof. If not, you should. It will help a lot because it is about what you are going through. Good luck. I will pray for you.
I didn't read all of the post so someone may have given you the same advise. If not, please take this post as a "been there ,done that, on the other side". Your family is worth it.