Nobody said anything about sharing your body indiscriminately, everyone discriminates on some level all the time.
I said consent was the important thing regarding sex, that's not the same as saying 'have indiscriminate sex'.
There is a vast grey area between 'indiscriminate sex' and what I'm guessing you mean by 'moral sex', (you didn't elaborate on what you meant by the latter).
'Huh. That's funny. We know a ton bunch about physics, and yet, no human being has ever been anywhere near a black hole, or has seen a quark, or has felt a neutrino.'
This doesn't contradict what I said, humans do learn by experience, I didn't say that they only learn by experience, obviously we also share knowledge.