It's threatening to women, too.
Think about it. Men's violent nature may have been a survival asset to the tribe, but to the individual male combatants it tended to weed them out young, in prime breeding condition. This suggests that any evolutionary imperative for men to be fighters was not of evolutionary benefit to their bloodlines at all. The only way it could have been selected for was sexually. Women were programmed genetically to seek out powerful, violent males who got them pregnant but had a short life expectancy. The meeker, quieter men then inherited their mates and their cubs and the job of raising them..
The girls may wind up marrying the accountants, but they prefer to date the bikers.