The way you see NFD is just fine and dandy.
When there are no kids involved.
But... if there are children, then divorce should be as hard and as painful as possible.
Better the kids should grow up in one unhappy home than two unhappy homes.
You are wrong there. Kids who live with two fighting parents forced to stay together will be so emotionally scarred that they will probably NEVER marry....if they do not commit suicide that is.