If a woman has a choice of when and how she has children, then she has the right to make children she wants and can afford. We allow women to terminate pregnancies that are unwanted. We allow them to give away unwanted children through adoption. If a woman can choose to kill an inconvenient child, why not make a loved one? Why not allow a willing woman to carry her sterile sister's child? Why not allow an older woman to carry her infertile daughter's baby? As long as all parties consent, voluntary surrogacy is as much a woman's choice as abortion. Until there are viable and successful artificial wombs, surrogate motherhood is the only option for a biological family unit's creation in some cases. Why deny them that choice, when killing unwanted children is allowed?