We should also account for the fact that our laws include exceptions to justify killing other people centered around the principles of self-defense and protection of property. Women own their bodies, and the fetus requires the use of their bodies to survive early in the pregnancy. If the fetus is a full person (despite having no name, no citizenship, and no numerical value from the get-go), it should have ALL the rights and ALL the duties associated with personhood, including the duty to have the consent of the uterus owner before attaching itself to it
. The self-defense argument is self-explanatory: women whose lives are put in danger by the presence of a fetus should be able to terminate the pregnancy.
The Right needed religious ideologues sitting in the courts in order to ignore these arguments. That's what makes the religious aspect of the decision to overturn RvW (and trigger abortion bans in many states) important.