It think in evolutionary terms we are still the product of our way of life as it was over hundreds of thousands, if not millions, of year.
Smallish tight groups of hunter gatherers trying to survive in an hostile environment. As such, when group violence arose I suspect that there wasn't much of a "those who don't fight" kind of people.
Change to this way of life is relatively recent (on a scale of thousands of years, not hundreds of thousands+). And the "modern world" is really something that is brand new and most likely has not changed us in evolutionary terms yet.
Smallish tight groups of hunter gatherers trying to survive in an hostile environment. As such, when group violence arose I suspect that there wasn't much of a "those who don't fight" kind of people.
Change to this way of life is relatively recent (on a scale of thousands of years, not hundreds of thousands+). And the "modern world" is really something that is brand new and most likely has not changed us in evolutionary terms yet.