No wait, that s not right. It s very rare that somebody would be satisfied with half a baby in a custody dispute.
Real life is much more complicated.
Usually when people fight over children it s because both sides want them very much. That is why we have this bloated, inefficient super-structure of law, bureaucracy, and politics to govern such things. Figuring out who wants a child more and would be better equipped to deal with it is usually very hard. Like with many Biblical tales, the wisdom derived from the Solomon story is not very complicated. Instead, it is simple.