I've said it before and I will say it again: I can respect, even though I find it personally repugnant, this moral position more than I can respect the pro-life with exceptions position.
Think about it: If a person truly, 100% honestly believes that a fetus has the exact same right to life as its mother, wouldn't allowing abortion in cases of rape essentially be allowing the execution of a "child" for the crimes of its father? To me, allowing for such exceptions pretty clearly demonstrates that this isn't really about the life of the fetus. It's about punishing women for "whoring around". Don't get we wrong, there's nothing preventing the "no rape exceptions" crowd from sharing that motive, but at least it appears more consistently motivated by the life of the fetus.
Take none of that as endorsement of such a viewpoint. I find it to be morally repugnant, as it essentially punishes a woman for being raped by presenting her with no options. However, I at least find it to be honest and consistent. It's the difference between "cut taxes, cut spending on social programs, increase spending on military" and "cut taxes and cut spending on everything" - neither is likely to be helpful, but at least the latter seems to be honeatly trying to do what they really trying to do what they think is right.