What gives value to a person is their ability to achieve that human experience that we all have. At about 18-20 weeks the tools in your brain to activate that conscious experience start to develop. After that, it feels like we're taking away that human experience that we value.
@VulcanMan6 6mos6MO
The personhood is irrelevant because even a fully grown adult human does not have the right to use your body without your consent, so whether or not you consider a fetus to be "a person" doesn't make a difference, since they don't have a right to your body anyway...