How is immortality selfish? Selfishness requires taking from other “selves” who have unmet needs of their own. But there’s every reason to believe a society of immortals could either function perfectly well without producing new selves, or that it could choose to reproduce at a slow rate sustainable with its ability to extract resources to support itself. Any new selves that were born would be provided the same opportunities that we provide new selves in the present day—breastfeeding, education, healthcare. How would that be “selfish?”

Is it selfish when a centenarian lives past 100? Is each additional year of life obtained by a centenarian “selfishly” stolen from some hypothetical unborn self?