It is also true that the kids always lose in these arguments. Court battles based solely on money have ruinous consequences. I experience first hand how parents' money disputes effect children. I see the tears of financial abandonment and parental estrangement due to another parents retribution for non-payment. Some parents fight about who should pay how much and who should go to work.
Little consideration is given to the worth of the stay at home parent.
Few times is the arrangement made for the children based on what these two parents might have done for their children if still married. For example, expenditures including extra-curricular activities, sports, school costs, summer camp, driving and college must be considered. Others fight about money through custody disagreements. Some custody evaluations are for the veiled purpose of obtaining the maximum child custody in order to avoid or reduce child support payments. What's best for the child is not the paramount issue.