I believe women are just as violent and competitive as men. Due to reasons of biology, the aggressive behavior of women just manifests itself differently. While men are more inclined to express it physically, women are more likely to express it through spreading harmful gossip or political maneuvering.
I don't have any data to back up what I just said, but if you are a woman, and you are saying we should "phase out males", then this extremely aggressive suggestion would strengthen my belief.