I’m not a Christian, so your arguments about when Christians celebrate Christmas are pretty much irrelevant. But the “Annunciation”, when Mary is supposed to have recieved the news that she was going to produce Jesus is equivalent to Jesus’s conception, and actually is celebrated by Christians.
And no, all our laws do NOT indicate that personhood begins at birth. If you kill an unborn baby you can be prosecuted for murder…although often you’ll be charged with manslaughter rather than murder 1 or murder 2. So contrary to your statement unborn babies are protected by our laws and the common law.
Our language does not strictly differentiate between fetuses who are merely things and born babies who are human beings. Haven’t you ever heard a pregnant woman refer to the entity inside her uterus as a “baby”? Have you ever talked to a pregnant woman? Have you ever talked to any woman? If language always and only treated fetuses as objects, the phrase “unborn baby” would be nonsensical. However, since you have some understanding of what I mean when I say “unborn baby” it cannot be that a person still inside their mother’s womb is a contradiction in terms.
The truth is that our “laws, social norms, language conventions, economic policies, regulations and more” gradually begin to recognize the personhood of an unborn baby as that baby develops. The attempt to create a bright dividing line…either at conception, or at birth…is misguided. In my personal opinion a fertillized egg isn’t really a human being, neither is a clump of undifferentiated cells. That doesn’t mean that a 7 month old fetus is just an inhuman thing. You have no problem recognizing a premature baby born at 7 months as a person do you? So why should an identical 7 month baby be an object just because they’re still in their mother’s womb?
I don’t agree that human life begins at conception. But no one besides you believes that human life begins exclusively at birth. Sure, we could just declare that human life begins at birth, but that will lead us to a host of nonsensical conclusions that common sense requires us to reject. Therefore, common sense tells us that a fetus gradually assumes personhood sometime between conception and birth…but there are not and cannot be any bright dividing lines between persons and objects. Some entities are unambigiously persons, some entities are unambigiously objects, other entities are ambigious. Deal the with the ambigiuity. You can’t just define it away.
