 Labor-based accounts have the advantage over genetic accounts that they can explain why the individuals they pick out as the parents ought to have parental rights. They also incorporate adoptive and other non-biological parental relationships into a single account of parenthood, whereas genetic accounts seem forced to view non-biological parenthood as a distinct type of normative relationship. Objections to gestationalist accounts of parenthood may start from the problem of paternity: if gestation is necessary for parenthood, how can men become fathers (Bayne &amp; Kolers 2003)? Broader labor-based accounts that count the work of other caregivers can explain fatherhood, but they still seem to give the gestational mother veto power over other potential parents. As Barbara Katz Rothman puts it: “if men want to have children, they will either have to develop the technology that enables them to become pregnant … or have children through their relationships with women” (Rothman 1989, 257). Some will find this implausible.