You forgot to mention rape. I'm told that 1 in 200 people on this planet can claim genetic heritage with Ghenghis Khan. That happened via rape together with the 'exploitation, killing and conquest' but no one in their right mind wishes to visit this mind-numbing inglorious fact on his descendants and not just because that would be impossible. Who knows? Maybe you and I are one of those descendants. Familiarity with world history will tell you that there are no groups of superior beings anywhere who abstained from the activities mentioned. Some won and some lost. The latter, not for the want of trying.