But these dominant traits of greed, aggression, deceit, ruthlessness, etc. are being reinforced and concentrated in the gene pool just as we need the opposite traits of humanitarianism, empathy and selflessness as our only possible line of defense from our own overwhelming power to annihilate our species literally from one minute to the next.
But from the viewpoint of "survival of the fittest", humanitarianism, empathy and selflessness are muddying the gene pool. By reaching out to those who are less able, we are encouraging the perpetuation of genes that are less fit. (Just to be clear, I am not discouraging those traits, by any means. They indicate spiritual evolution, which is much more important ultimately.)