Yeah, but why the anthropoid primates, and not other primates like gibbons? In fact most animals retain it. Mainly it's just the anthropoid primates that lost it, indicating a common ancestor that was the starting point of the loss, so the capacity to synthesize vitamin C could no longer pass on to any of the branches that followed after, including gorillas, chimpanzees, and humans. It follows a pattern that's telling, and indicates something quite distinct from the notion that each anthropoid primate was a special creation, not related to the rest.
If you want to put your faith in a parable based upon natural observations, that's your business.
