Permit me to give give a dissenting answer with a theological justifcation. We say, rightly so, that what a person buys belongs to that person. They purchased it; they own it, as with, say, a home or a bicycle. We say as well that what a person makes belongs to that person. They made it, they own it; as with, say, a painting they produce. We also say, with regard to what some call "squatters rights," that we cannot despoil a person of his or her domicile. They live there; it's their home. By the same token, I would argue, (speaking theologically) God made us; we belong to him. He bought us (in the death of Christ); we belong to him. His Spirit lives within us; we are his dwelling place. We belong to him. So, at least theologicaly, I would argue that we do not belong to oureselves; we belong to God. We are trebly his: by creation, by pruchase and by indwelling. If so, we have no right to kill what belongs to God. At least that's the way I think it through.