More discussion of where, exactly, such a line should be drawn. I'm not saying he shouldn't have bitten it eventually, mind.
If you draw the line anywhere, you've bitten the bullet. The rest is just applied economics - as the joke about the woman goes, we've already established what Apologist is and now that'd just be setting his price.
True. You didn't make that point in the dialog, however, which is a shame because it's a good one. (I am not a fan of infanticide.)
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.