Imprisonment, execution and corporal punishment follow some behaviour that we agree is wrong, unlike pregnancy.
The retributive aspect is not important to the many people who hold the deterrence view of punishment, and no one holds that, say, the draft or taxation is punishment of people for wrong behavior.
I think there's a relevant distinction between bodily autonomy and financial autonomy.
Why would you think that? Financial wealth for most people is just their labor in another form, and labor is just their bodily autonomy. A job is a way of trading time for money. The connection between money and bodily autonomy is ancient - consider the countless forms of slavery, debt slavery, and debtor prison or work houses throughout history.
I'm also in the camp that's not focused on the retributive aspect of punishment; I'm not disputing that its main purpose is for the good of others. My argument is that the people being punished in this way have in some sense forfeited part of their right not to have their autonomy violated, by demonstrating inability to stick to a social contract that has been agreed on as reasonable. Views can differ on whether that's reasonable or not, but it's firmly distinguishable from someone forfeiting their autonomy because they got pregnant.
I don't agree that fina...
A few years ago, I wrote a little dialogue I imagined between 2 materialists, one of whom was for and one against abortion, centering on the personal identity question. I recently cleaned it up and added a number of references for the biological claims.
You can read it at An Abortion Dialogue.
Early feedback from #lesswrong is that it's a 'nicely enjoyable read' and 'quite good'. I hope everyone likes it, even if it doesn't exactly break new philosophical ground.