Here's what I see. It seems that people that are alone want to be in a relationship and that people in a relationship want out. I see people wanting different jobs, different houses, better this, other that.... It's destructive.
When we concentrate on the things we are not happy with we don't see the good things. You can write a few of them down. But you don't feel it because you've developed a very bad habit of seeing what you don't have.
A thought reaps an action, an action reaps a character, and a character reaps a destiny. What we think about is important. If you spent your time remembering the things that you loved about your husband and thinking about the house you live in, the neighborhood, friends, developing some new hobbies, getting back to whatever your beliefs are about God, loving your boys, walking your dog, enjoying your life right now, you wouldn't have time to be thinking this garbage.
I am NOT judging you. I am in an unsatisfying relationship. I spent years trying to change my husband. I spent years praying for change. I spent years thinking negatively and it had a HUGE impact on my actions without me even realizing it. Now we live nearly separate lives while we do enjoy our life and house together. But sometimes I wonder if there will ever be any hope for a real relationship. But I realize now that it took 2 of us to get to this place. I had a part in it no matter how much I may have wanted to concentrate on his shortcomings.
I have 4 daughters. They are 10, 20, 24, and 26. You don't realize this now, but they still come HOME. They still need a HOME to come home to. We are grandparents of one very special little boy now. God gave us this angel baby to help raise as the 20 year old goes through college. I can honestly tell you that I enjoy watching my husband be such a sweet grandfather. He needs us as much now as ever. Not only that, but my mother lives with us. God intends for marriage to be forever. It is forever. Even if you split you are only adding a complicated messy layer to your life. Dealing with X spouses, dividing up the family for the holidays, feeling jealous when he gets re-married or hangs out with some new lady. You don't NEED that. You will regret it if you go there.