In the case of an unwanted pregnancy, the existential choice for a woman is not abortion vs. no abortion, but, as Garrett Hardin has pointed out, abortion vs. compulsory childbearing. (See his Mandatory Motherhood for a biologist's look at the case for abortion.) If others can force her to be a mother (and she is the biological mother even if she does not raise the child), then she is coerced into putting her body at the disposal of the fetus as if she were an unclaimed natural resource or a chattel slave. Even if the fetus is removed and raised separately, she is still forced to be the manufacturer, the baby machine. Thus, the woman's most fundamental right of choice, the right to control her own body and happiness, is being abrogated.
In thinking that his position is pro-abortion, Block fails to recognize (or else discounts) the real point of abortion--not that the woman does not want to be pregnant, or that she does not want to raise a child, but that she does not want to bear this child. If the fetus is removed and raised independently, as Block suggests, the woman is still the biological mother with all the psychological significance that implies. She has still been forced to be the baby machine. But, we maintain, a woman's right to self-determination includes the right to refuse to bear a child as long as that choice is still physically open to her.
It does not pump its own blood WRONG; it does not do its own breathing; it does not have a separate (or any) consciousness. To say that the fetus is a separate entity as if it were the same as a completed, self-sustaining structure simply makes no sense even in biological terms.
We maintain that they cannot offer such proof because none exists. If there is no objective evidence that the fetus possesses the psychological qualities that define "person," ARBITRARYLibertarians have quibbled endlessly over the question of when the fetus actually becomes capable of rationality and therefore a person.AGAIN...ARBITRARY
Since the purpose of abortion is not just to terminate the pregnancy but to avoid bearing the child, what is necessary is not just the removal of the fetus (otherwise she could just bring it to term and give it up for adoption), but its death.
One additional ethical consideration remains. Tibor Machan and others have argued that the husband (or the man who contributed the sperm) has a right to a say in the matter of abortion. But the man has no right to be a father against the woman's wishes. If she does not want to be a mother, then to insist that she produce a baby for his benefit puts her in the position of a chattel slave. The woman has the right, however, to choose to be a mother even if the man does not want to be a father. THIS FORCES THE FATHER AGAINST HIS WILL INTO FATHERHOOD, NO?
But if rights and principles are, as we maintain, interpretations of the relationship between ourselves and the world of reality, then we have the right to judge the reasonableness of these constructs by their results on our lives. If the principles we espouse result in immense human misery, we may justifiably ask ourselves if these principles are false and reexamine them in a new light. THIRD REICH???
Some anti-abortionists even go so far as to suggest a sociological link between abortion and the mass murders in Nazi Germany. But this makes no sense, since Hitler was opposed to abortion ("Nazi ideals, he said, "demand that the practice of abortion shall be exterminated with a strong hand.") and indeed Nazi law made abortion a capital crime. ONLY FOR KILLING GERMANS, I BELIEVE, NOT OTHERS