Hi Topgun, I am sorry to see that you are back. One thing jumped out to me in your post. You said that she is going to school with people 10 years younger and that you and the kids "couldn't compete with these people".
Are you saying that there are other men that occupying your W's time now? Because if you are, remember there are always going to be men around your W. It is how your W responds to these other men that shows who she is.
Don't forget you can compete with anyone else in your W's life. You will always have something that other men do not. You are married to her, and you have a family together. This is the biggest advantage you have over everyone else. Take care of yourself, detach and good luck.