Hi Liz,
I think deep down inside you probably know the answer to that question somewhere.
When I was married, I did not feel the love but I was very comfy in my situation of having his income help and support me. I was working too, but he made far more than I did. It takes a LONG time to decide if you want to break up a marriage. I pondered it for years before I finally did it.
At times I admit I do have my regrets, but I know my ex husband never would have left me and I think it's better than we are no longer together. You need to figure out what is best for you.
Best wishes,
-z