> I don't really care whether fetuses are people are not.
... well, if they are, then abortion is murder, right? I don't see why you wouldn't care whether they "are people" or not. It seems crucial, at least if you think, like I do, that murder is just about the worst thing a person could do.
> The fact is that bodily autonomy is never restricted so much [...] I'm not forced to donate organs, to donate blood, or even to do something so simple as get a vaccine.
These are not in the same category. All of these might give another person a chance at living longer (and yes, some of them like organ donation in particular carry some risk of death for the donor). Abortion definitely takes away any possibility of living from another person.
I don't buy the bodily autonomy argument. Yes, ~half the human population bears the burden of carrying children, and no, that's not fair. Everybody (men and women, of all generations) should be invested in living in a society where we don't create incentives for anybody to kill anybody else, up to and including not having sex outside of some setup/framework where any children produced will be loved and cared for.
If we can't agree to something like that, then it seems like we would have to collectively accept that murder isn't all that bad.