The maxim "parents should do what is in the best interests of their child" seems like an unassailable truth, and yet, as I argue here, there are serious problems with it when it is taken seriously. One problem concerns the sort of demands such a principle places on parents; the other concerns its larger social implications when conceived as part of a national policy for the rearing of children. The theory of parenting that creates these problems I call "optimizing parentalism." To avoid them, I define and defend a new and more morally appealing theory, "satisficing parentalism."