I have noticed that one of the most common pro-choice arguments, and one of the ones that I agree with the most, is the argument that no one has the right to force someone else to use their body to keep them alive, even if, without it, the beneficiary would die. The common analogy of forced organ donation not being enforced by governments is often utilized as an analogy for visualizing why continued gestation should not be forced upon pregnant individuals by governments. This argument is exemplified by Judith Jarvis Thomson's Violinist Metaphor.
Now, here's the exquisite twist: In embryonic stem cell research, an embryo (which, in this case, is outside of anyone else's body, so that particular part of the situation is taken care of) not only has its bodily autonomy violated, but is, in fact, KILLED, in the process of having some of its (stem) cells removed to keep another person (a patient with a terminal illness) alive. This is exactly like forced organ donation, being forced (stem) cell donation, except that it is even worse, because it results in the death of the embryo that is being forced to donate its (stem) cells. In other words, ESCR is the equivalent of forcing a pregnant woman to remain pregnant in order to preserve the life of her zygote, embryo, or fetus, with the pregnant woman being killed in the process. Surely, this is the kind of horror story that all pro-choicers would be up in arms about.
Yet, if they are truly pro-choice, and pro-choice for everyone, not just those older than a certain age or past a certain developmental stage, pro-choicers ought to be ardent opponents of legalized embryo-killing stem cell harvesting.
Unless they are not truly pro-choice, as they claim, after all, but are really just ageists using choice as a veneer to masquerade their true motivations: lethal age discrimination motivated by postnatal supremacist prejudice.
Indeed, my current position is that I think abortion should be legal (although I am personally opposed to it, meaning that I think it is wrong, personally, and would choose not to have one if I were to ever become gravid, or pregnant), but I think killing of any antenatal individual when it is outside of someone else's body should be illegal. This would include destroying embryos after in vitro fertilization (IVF), in addition to destructive embryonic stem cell research (ESCR). Both of these practices ought to be legally recognized as murder.