Leslie Cannold provides an analysis of several philosophically interesting results of a recent study of the fertility decision-making of thirty-five childless/childfree Australian and American women. While most women endorsed and expanded on longstanding normative prescriptions for how a "good" mother ought to feel and behave, they were at a loss (at times quite literally) to explain why a woman should decide to mother in the first place. For several women, this difficulty led them to conclude that a decision to have a child was "irrational." The author argues that applied philosophers bear some causal and moral responsibility for women's negative conclusions about the rationality of deciding to mother and are obligated to respond to these findings by beginning work on normative accounts of the decision to parent.