This is truly the age of pure humanity. War was something that had to be invented, and only came about ~10k years ago. We are all descendants of the survivors of war, the most brutal and feared killers are our ancestors; the predisposition towards violence is in our blood. The humans who worked in these caves and elsewhere, consuming migratory reindeer and avoiding larger and more dangerous fauna, our ancestors slaughtered these men and enslaved these women. How different the world might be if war was never waged, it's hard to imagine as we've become so accustomed to constant warfare.
Many historians feel that the neolithic revolution, with the resulting social stratification and development of warfare that has been with us ever since, was the worst development in human history.