I agree with you, but as a practical matter, you will never get what you want as literally millions of babies are destroyed. If we limited it to just rape ,incest,and the LIFE of the mother we could pass that tomorrow. This has gone way to far to end up as an intellectual exercise as opposed as a way to save millions of babies. We can talk about the issue for another 60 years or we can pass a law that a majority could get behind and limit the destruction to a few thousands as opposed to millions.
It is our absolutism that has kept the argument going for 60 years. If we could save 99%, why not start there?