 Some philosophers argue for limiting the moral right to procreate to married or long-term male-female couples on harm-based grounds (Almond 2006). Some claim that same-sex and single parenting harm children. While the empirical debate cannot be addressed here, there seems to be a lack of evidence that same-sex parenting harms children. For example, an American Sociological Association review finds a “clear consensus in the social science literature” that children of same-sex parents are no worse off than children of different-sex parents (see Manning et al., 2014). In any case, since evidence suggests that high-conflict families or divorce can harm children, such arguments risk inconsistency if not applied to male-female couples at risk of divorce or sub-par parenting.