Not to interrupt but I think it could be one of two things (or a combo of the two).

1. On some level...conciously or unconciously, you believe this is all the better you deserve. You don't deserve to be treated well.

2. It's comfortable. I hate change. Yes, there are a lot of faults with your hubby...but you still have someone. You know? I don't think you're afraid to be alone...but no one likes being alone.

Just mt $0.02....not worth much, but there it is.