Shrug It’s simply murder. Murder is muder, whether it’s an intelligent person or not, baby or not, fetus or not. Human life has no other natural or sensible boundary other than, and if you are going to start splitting hairs over it, then I expect and demand consistency. Everyone’s moral worth should be evaluated in the same way. Peter Singer* is wrong, but he at least is honestly wrong.
For me, life is life. I do not assign “values” to human life of varying kinds, and note that people who do always somehow wind up assigning a much higher value to whatever class they personally belong to and/or admire. From the very moment of conception, a new being is born, one which develops at an absurdly rapid pace.
This being begins swiftly to have thoughts, dreams, experiences - and is in every way a moral being to me, with standing to claim rights, which we as members of the moral community must not violate. It is a human being, flesh of our flesh, part of our spiritual universe. It is a unique creation of God, endowed by him with the ability to choose. Even retarded or very stupid humans have made choices and continue to make them. Sometimes, of course, a human being is so damaged he cannot actively choose (and with modern medical teechnology we may have the ability to keep them alive somehow), but they are part of a moral community of humanity.
This is in contrast to animals, which can not and can never be part of the moral community. They do not make moral choices. They live without guilt and without sorrow or joy. They do not, apparently, particularly care for their children - even species which take care of theirs do not mourn their dead. Humans do, even if we sometimes must close off those feelings to function. We care.
An ethicist* who argues that moral standing is based, mor or less, on intelligence, and that intelligence defines moral standing. A baby is worth less than a man to Singer, and a retarded person worth less than a normal person. He would consider a normal animal sometimes more than a very stupid or “defective” human. He has, IIRC, no problem with abortion, because he considers unborn children to have no intelligence and effectively no worth or moral standing.
*Ethicist: A man who talks about morals without believeing in them, making rules he doesn’t follow, on principles he doesn’t believe in.
And I do separate abortion from anti-conceptives. They’re not the same. The one is a casual, banal horror humans casually inflict upon themselves daily. The latter is not good, but not evil (at least not in the same way). The former is actively doing evil; the latter is preventing great good.
I do consider the “morning-after” pill to eb int he same moral category as abortion. It acts to deliberately destroy an unborn, if very small, life. The fact that it technically does this before that life attaches to the uterine wall is morally irrelevant, though scientifically interesting.