A consequence of this argument is that abortion is wrong in all the cases where killing a child or adult with the same sort of future as the embryo would be wrong. So for example, "if" involuntary euthanasia of patients with a future filled with intense physical pain is morally acceptable, aborting embryos whose future is filled with intense physical pain will also be morally acceptable. But it would not do, for example, to invoke the fact that some embryo's future would involve such things as being raised by an unloving family, since we do not take it to be acceptable to kill a five-year-old just because her future involves being raised by an unloving family. Similarly, killing a child or adult may be permissible in exceptional circumstances such as self-defense or (perhaps) capital punishment; but these are irrelevant to standard abortions.