There are so many variables to take into consideration we would be naive to think child psychology is as simplistic as sexual education. The entirety of human existence and psychology is more nuanced than: "this is penis, penis bad." DNA, evolutionary processes, reproductive systems, social stigma, personal motivations, society, environment, clothing, peer pressure, freedom and even the average age of humans are different. Let's not even talk about how we've been clustered together like sardines for only about 12,000 years and prior to that we had minimal contact with others from outside our bands for hundreds of thousands of years.

Our environments have changed over time, our social rules have changed over time. Explain the concept of a father walking away from his responsibilities, his children and still claiming to be a good person with sound morality. Or explain the idea of chastising someone for their inherent sexual urges during puberty? At least this girl knows what's going on. Fuck it, let's just chop off the clit. Then we won't have this problem of morality.