Well speaking as a man who had a divorced initiated on him, I admire you both for remaining civil. We managed to do that too for the sake of our children. They are now fully grown and seem not to have been ruined as a result. Of course it was not easy, but since we both focused on easing the children through the process it was easier not to give in to the hurt and become angry and bitter.
It turned out to be a good thing (looking at it in the rear view mirror). I'm glad in retrospect that she had the strength to end it when she did. I think I would've tried to keep fixing it at the expense of all of our happiness.
At first we stayed friends, which was important to the kids, but now we've drifted apart, not out of animosity, just because the kids are grown and there really isn't a reason to remain close. It was a good partnership (raising the kids), far better than the relationship.