So is Coulter's arguement that divorce should not be allowed? Or that if people divorce then should lose custody of their children?
I don't think so.
I think Coulter's intent is to point out the harsh reality of the consequences of some of the choices we make. It's the kind of thing parents should spend time thinking long and hard about before divorcing.
Too many parents divorce with very little thought about or awareness of the impact on their children.