The genes that carry peace and love and compassion are always recessive. Seems odd to me that a reproductive process that depends on "romance" does its best to get rid of it. I've preached this line since I was sixteen years old.
The tribes who grew grains were pushed to the edge of the continents way before the white man bumbled ashore. Lots of them starved and froze to death in Patagonia. Conscientious objectors in Nazi Germany were sent to concentration camps and often killed.
The world won't be free of war until all of the soldiers sit down. Those men who start wars don't fight wars. They send your children. They call it patriotism. They depend on aggressive, dominant genes.
Give us peace on earth and end this dreadful, dreadful war.