Carico, I have been asked by percy to intervene here. I suspect it is not necessary and that you do understand the evo position. But just to make sure, when evos speak of "apes" in the broader scientific sense, they refer to a large group of different species and includes humans within that species.
I realize you are referring to human beings and other primates, and trying to get across a point about how evolution could or could not occur. I am not sure the discussion ever advanced far enough for the point to be made known, or if anyone was even trying to grasp your point before just dismissing it, but just to be clear, evos from their perspective would say humans can breed with apes since humans are apes.
You are saying that they cannot, meaning they cannot breed with non-humans, and just to verify that for anyone reading. Stalin did try to breed humans and chimps and other primates, and his scientists were unsuccessful.