I don't see why you'd debate that. You could debate what the rights of the mother vs. the rights of the unborn baby are until you're blue in the face and you'd be unlikely to convince the other side that they're wrong. What matters is that a large group of people think the abortion is an acceptable procedure and those that disagree aren't directly impacted by the decision. That alone should be enough to enshrine it as a right. We're a free country after all, which generally means people can do as they please so long as it doesn't negatively impact others.