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[–]ActuallyNot 3 insightful - 1 fun3 insightful - 0 fun4 insightful - 1 fun -  (0 children)

Is arthritis not natural?

Our greatest biological imperative is to produce offspring

Human society and culture has a few more dimensions than that.

Many people are creative without being procreative. And the fact that later siblings are more likely to be gay implies that there's a biological advantage to it, given a natural environment.