The problem I have with most pro-abortion people is that they are stunningly hypocritical. While they speak from one side of their mouths about a woman's right to control her own body when she wishes to get rid of an unwanted fetus, from the other side they deny her the right to control her own body in a thousand other circumstances.
If a woman's body belongs to her, then she has the right to exchange sexual favors for money, she has the right to be photographed however she likes, she has the right to either take or refuse any drugs, medicines, vitamins, and foods (natural or unnatural) that she chooses. She has the right to refuse or consent to medical treatments according to her own medical and moral beliefs. She has the right to give birth how and where she chooses, attended by persons of her own choosing. She has the right to defend her own body and her own life from aggressive attack. She has the right to use her own time, talents, and energy to earn property, and the right to dispose of that property according to her own values.
In fact, one of the only circumstances where a woman's right to control her own body can be legitimately questioned is the circumstance of pregnancy, where another human being depends on her body for its life. What rights, if any, does that unborn human have? When there is a conflict of interest between a woman and her unborn child, they cannot both win.
The thing that is so disturbing in the anti-liberal pro-abortionist position is that it denies a woman all ownership rights over her own body except in that one circumstance where there is an obvious conflict with the rights of another human being, i.e., abortion.
Thus, the term "pro-choice" to describe this position is absolutely inaccurate. The term should be "pro-abortion" or "anti-fetus." These people are not pro-woman, pro-choice, or pro-freedom in any way.
I know that many different types of people support a woman's right to control her own body, even at the expense of an unborn child, and I am not painting all of these people with the same brush. Those who are consistently libertarian, and choose to come down on the woman's side in any conflict of interest between herself and a fetus, are not being inconsistent or hypocritical.
But if the right to abort a baby is the only woman's right that you support, and you would deny her the right to make choices about her own body in a thousand other circumstances, then calling yourself pro-choice, or even liberal, is just a bald-faced lie. The accurate name for you would be pro-abortion, anti-choice authoritarian.
And the rest of us have to wonder, what are these pro-abortion authoritarians really all about? Given that they're hypocritical enough to call themselves "pro-choice," it's very unlikely that they're ever going to answer this question honestly. It might be interesting to ask, but we won't expect a straight answer.
My best guess is that most of the pro-abortion crowd are really about population control, at least for those who support abortion rights within the context of socialist authoritarianism. They have no problem with large populations of tax-slaves working for the enrichment of political elites; they just don't want too many slaves. Their agenda is simply to thin out the population of slaves to a more manageable level by encouraging the slaves to choose abortion for themselves. If the agenda of the power elite changes, they will just as easily support mandatory, forced abortions, or perhaps outlaw abortion and switch to mandatory, forced pregnancies.
Anyone who disagrees with this speculation should at least come up with another explanation for the fact that these pro-abortionists have no interest in other libertarian issues, nor the slightest regard for the rights of the unborn.
On the abortion issue itself, I would just say this: Roe vs. Wade, while generally viewed as a really bad piece of case law, and hated by extremists on both sides, seems to represent something close to an American consensus. An embryo aborted in the first trimester may indeed have a beating heart, but it is not yet a sentient being and does not suffer any pain. The pregnant woman has at least a month to make a decision about whether or not to carry through the pregnancy. In all it seems to me like a reasonable compromise between the rights of the woman and those of the fetus when the woman truly does not want to bring the pregnancy to term. To me, both extremes have unacceptably inhumane results.