> ideologies--one that emphasizes the importance of reproduction, and one that emphasizes the importance of individual choice. Neither position is based primarily on scientific facts or rigorous logic.

I would say the former isn't about the value of reproduction any more than the principle of not killing a one-year-old is not about reproduction. It's about what counts as murder, based on what counts as human life. Whether or not one thinks of a 15 week old as being human life is all the question is about.