Most of us accept that we have special obligations to our family members: to, e.g., our parents, our siblings, and our grandparents. But it is extremely difficult to offer a plausible grounding for such obligations, given the apparent fact that (at least most) familial relationships are not voluntarily entered. I did not choose to be my mother's daughter or my brother's sister, so why suppose that such facts about me are morally significant? Why suppose that I owe more to my mother or to my brother than natural duty requires that I do for all and any persons? Special obligations appear more problematic the less the relationships that supposedly generate them are akin to the relationship between promiser and promisee, a voluntarily assumed relationship. Thus, for example, special obligations to friends might appear less problematic than do those to family members, because it seems that we voluntarily choose our friends, and, thus, voluntarily choose to bear more for them than natural duty requires.