You've taken a beating. Whats the big deal about being single for her? All that "glitter" won't be glitter anymore when she's single like the others, and she'll just be sharing people who are sharing people with the other people.
Give her the divorce while delaying it as long as you can. In your position your supposed to find a way to enjoy yourself.
In my position I've accepted that I'm a "bachelor", it was not my choice, but thats what I am and I need to ensure that my needs are met. If the wife can talk herself out of a divorce, then I will not deny it. Other than that I don't expect anything to change for the better with her.
Why was it so important for her to get a divorce with you?