It sounds like just talking it out here has helped you decide what to do. That's always good. From the outside looking in, I want to say get what your entitled to. But, when I was in the middle of it, I chose to just cut my losses, so I know how that feels. I do get twinges of resentment every once in a while because he got a good job after the divorce and now has a nicer lifestyle than me, financially. And it ticks me off that I took care of so much, in the money department, for so many years. But, then I remind myself that it was my choice and I have a lot more important things in my life.
Whatever you do, it'll work out in the end.
L