The goal of family courts is to render court orders (or approve parties' stipulations) that address a child's best interests (regarding custody and parenting time) or a fair and equitable settlement (regarding property and finances). In the process of a family law dispute, one would like to think that both sides have a solid basis for their arguments, and that if the dispute persists through the court process, that it is the result of good faith and meritorious claims. Or, if the dispute does not persist through a contested court process, that it has to do with one party having a clearly stronger claim as to the child's best interests, or what is fair and equitable in the circumstances.
To quote Supertramp: you are bloody well right. I have some posts on the periphery of what you write on here but you nail the whole issue of financial ability on the head. Very good job.