It might be that the criminally agressive male passes his genes down through the generation by attracting and impregnating women, which women eventually leave him, taking the children so produced with them to a meeker male who is better equipped to pay for raising the aggressive male's children to adulthood.
LOL--in such cases, the world believes the woman was enlightened by experience to learn to appreciate the "right" kind of man, that she has (gag) "matured."