Hey Eagle, I know things are a bit rough. I sense so much fear coming from you. A fear that you don't have an identity without her.
I've noticed a theme in your posts. The word "easy" You thought staying at home with the kids would be "easy". It would be "easier" just to get a divorce.
Heck, we all want to try to take the easier route. But as someone who has never known "easy" in her life or has taken the "easier" route, I know true growth and the good things in life comes from not choosing the easier option.
Staying home with your kids: not easy it turns out, however, rewarding. My suggestion is trying to find a balance on things that make you happy. Not your W happy, but you, as an individual.
I feel your identity may have been lost somewhere along the line. Find it. It can be found without destroying the other relationships in your life. Don't worry.