Your stance commits a moral relativism fallacy by suggesting that legal statutes alone should dictate ethical standards. History shows the danger of conflating legality with morality - laws permitting slavery were legal but immoral. Asserting that morality should not influence law overlooks the law's purpose which is to embody societal ethics and protect human rights.
Actually, I don't have a moral relativism about this at all.
Moral relativism would say all morals are okay, and they're not.
But I do not say that life is more important than liberty as a value, and for that reason, I'm willing to lay down my life for what I believe is true. You're not. You'd let the Catholic church take over the US government and force people to agree and we'd end up with the inquisitions, as before, "but the earth still moves."
You wouldn't lay down your life for anything but what you think is the life of another human. And you'd lay down the life of a pregnant woman to save an embryo and excuse yourself by saying you didn't know it would happen no matter how many times we told you. And you still wouldn't be able to end abortion and save them all, because a fatally defective fetal twin can threaten the life of its twin as well as the woman.
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Laws against abortion were legal but immoral. Roe v Wade asserted their immorality. Dobbs tried to make it a states' issue, but the truth is that the 14th Amendment should apply to women but not embryos.
The assertion that even if a fetus were a person it would have no right to the woman's body ignores the principle of inherent human rights that do not necessitate consent, especially when considering the dependency of a developing human life.
A fetus is not a person and does not have inherent human rights. I "ignore" the fetus as a non-person. Sue me.
Your argument that a parasitic head is not considered a person and therefore it is acceptable to separate conjoined twins in such a manner is a false analogy. Your comparison inaccurately portrays the fetus as a parasite while ignoring the natural biological relationship between a mother and her unborn child. Your analogy also overlooks the ethical implications of directly causing death. Self-defense laws that you cited do not equate to abortion as they involve active immediate threats to an individual's life and not the natural dependent state of a fetus.
A pregnant woman IS NOT A MOTHER. A pregnant woman who wants to continue her pregnancy is a mother-to-be. A pregnant woman who doesn't want to continue her pregnancy is either a victim of a crime, e.g., rape or forced impregnation, or an accident, e.g., ineffective contraception, embryonic implantation in a fallopian tube, loosened implantation, etc., etc.
If the biological relationship between a pregnant woman and an embryo or fetus is non-consensual, it is not natural and is not fundamentally different from rape. If you're raped, you can use lethal force if necessary to stop the rape because it is a felony, even though you can't prosecute the rapist afterward if he or she was legally insane at the time of the crime. The non-consensual embryo even has its sex organs inside the woman's uterus, a sex organ, after the seventh week!
No, I don't agree. Self-defense against rape, sexual assault, kidnapping, and felony robbery do not involve active immediate threats to the individual's life. They might kill the individual, but they are more interested in violating the individual's bodily liberty,