I'm stumped on the "personhood" argument as even in biological/genetic terms it can be viewed more as a spectrum rather than two distinct opposites: personhood and non-personhood.
Agree
I have never understood why both prolifers and prochoicers argue pro abortion or anti abortion based on the ethics of defining when the embyro is considered "alive and human". Unfortunately, even within the field of embryology, there is no black and white defintion of when life begins ( is it when the sperm and egg unite and form a zygote with the complete genetic blueprint for a human or when it arbitrarily goes from being an embyro to a fetus after a certain period of time? ) Those of us who studied embrylogy in medical school argued about it all the time.
I'm more pragmatic:
I am prochoice unconditionally for the following reasons:
1. From a pure public health standpoint any country that does not allow abortion is plaqued with an epidemic of deaths from illegal abortions. From a public health perpective, it is vital to allow legal abortions.
2. We as a human society have evolved from the prison of earthly calamaties by cutting down trees to build a house and a fire, from starvation by mastering beast and plow, and we have escaped the bondage of "basic survival": with new technologies so we can reach our potential as scientists, philosphers and artists. We also have sent young men and women to die to protect our civil and social liberties that have evolved with a society of independant and sovereign nations.
Abortion is a natural part of social evolution because women no longer choose to be victims of the tyranny of their own biology. This is a natural evolution of the rights of half of our society. And a society that does not allow this choice take a good hard look at the condition of
half the population in that country. Societies where women are enslaved by their uterus ,their legal and educational status is subpar. Societies that define women by their reproduction does not allow them to support themsevles or educate themselves, and women and llittle girls are secondary citizens. When burdened with a family to feed and a husband that dies, these women starve or prostitute themselves and their daughters. From an anthropolgical and sociological perspective, this simple act allows half the population to be free and determine her destiny in her society.
As a Trekie I quote from Spock in The Wrath of Khan " The good of the many outweigh the good of the few." The few are the aborted fetuses, the many is the unshackelling and freedom of half the population of any society so that they can be free to use their "brains" and not their uteruses. In these societies, women who decide to give birth to their daughters know that their daughters standing in society is good and solid, and not degraded into reproductive chattles for men. The quality of life for these daughters are now more assured ( not gauranteed of course).