Sometimes I wonder about selective examples. Yes, Genghis Khan had many wives and concubines, and evidently hundreds of children.

But Augustus Caesar (Octavian), who cemented Roman rule of the entire Mediterranean world and beyond, was famously continent with respect to women. In fact, he had so few children that the dynasty he founded rather suffered for lack of heirs. (No, he wasn't gay, just busy, with work rather than with spreading his seed around.)

So, what makes Ghenghis the "natural" example and not Augustus? Preconceived conclusions, perhaps?