Blame? You're the one bringing up blame of the victim.
If rape was unavoidable then how could I justify saying it's immoral? If rape isn't exploitation of the victim and a violation of the victim's positive interations with the world then they would have no bodily rights for me to respect.
Do you really believe that rape victims deserve no credit for their own bodies and existence? Do you think a rapist wishes that their victims didn't exist? Why do you say I'm blaming?