..whether a behavior evolved because it was directly selected for, or because it was a byproduct of another adaptive feature, or, indeed, whether it evolved at all, should not color our moral judgments. Many tendencies that we regard as morally reprehensible clearly evolved, including numerous kinds of sexual coercion, lethal violence, and social domination. Equally, many morally delightful tendencies did not evolve, such as charity to strangers and kindness to animals. Our decisions about which behaviors we like or dislike should never be attributed to our understanding of their evolutionary history or adaptive value.
—Richard Wrangham, The Goodness Paradox: The Strange Relationship Between Virtue and Violence in Human Evolution.