I'm quite sympathetic towards arguments relating to it being an exception, given the horrible nature of rape, but my view is that rape ultimately shouldn't be an exception since I think that every child (barring the aforementioned exception, as that exception preserves viable life) should have the same opportunity at life that you and I have been granted.
Exactly what I said before; the only reason you oppose abortion is because no woman would ever agree to proliferate your genes, so the only way you can do that is to rape her and then force her to carry your deficient offspring to term.