I'm well aware of that. But it still requires a transition, from society not caring to society caring.
If you're well aware of that, why did you attempt to paint those who reject fetal personhood as a politically irrelevant minority who are ok with infanticide?
The idea that society would have to
transition to caring about babies is laughable.
Pushing that transition to some point earlier than delivery isn't a fundamental change.
Well, that will depend very much on where they want to draw the line, and why. There might not be a single clear answer for where we should draw the line, but there are some places where we can be confident it shouldn't drawn. Like, personhood should probably begin somewhere before the age of thirty, and sometime after the development of synaptic connections in the pre-frontal cortex.
Someone who wants to draw the line at, say, the development of a fetal heartbeat, or at conception, is in fact doing something fundamentally different, because they are relying on morally irrelevant characteristics as criteria for personhood. Someone could advance a less demanding account of personhood than I would, for example by setting the capacity to experience pain as the only necessary condition for personhood. But in all these cases they will be confronted with the problem that we fail to grant personhood to almost everyone who seems to deserve it, and will generally then try to incoherently exclude those morally significant others from consideration.
You're both deciding that society gets a say in things at some point.
No. You're conflating morality with public policy. The next step after reasoning your way to a moral conclusion is not automatically "there oughta be a law!", and we're talking about whether "society" gets a say
in the abortion. If I say that my position on abortion is that it should be between a woman and her doctor, I am explicitly saying that society does
not get a say in things.
If a woman is 9 months pregnant, performing an abortion is not really less invasive or safer for the mother than just inducing labor. So there are better options available even before birth that discharge any obligation the parents might have.
In the third trimester, you're inducing labor either way. I would not so much say there are better options than abortion at 40 weeks as I would that abortion is no longer an option at all. You won't find a licensed physician willing to perform an abortion at 40 weeks, even in the places where it's legally permissible at every stage of pregnancy, even in the case of fetal abnormality. Like I said, an abortion at 40 weeks is implausible.
But sure, if someone wants to say "Abortion should be permissible prior to the 40th week of pregnancy, but after that there are better options", that's no skin off my nose.
The practical distinction you're trying to make is not nearly so clear cut as you seem to think.
The
practical distinction between a fetus and an infant is very clear cut.