Hence my grandparent comment. Our attitudes and laws about what a person is are wildly different depending on whether we're talking about abortion, or human experimentation, or human cloning. We're allowed to make and kill fetuses but only when it doesn't serve a useful purpose?
Maybe odd at first glance, but the more I think about it the more sense it makes. It helps to turn the logic on its head - should it be legal to deliberately or negligently create human fetuses, only to kill them?