Today, the USS Kitty Hawk sails into Sydney Harbour accompanied by other smaller vessels. It carries nuclear weapons and 80 supersonic aircraft. Probably it could, if so minded, completely destroy every major city in Australia and kill nearly half of its population of 22 million (because most folk in Australia live in cities).
By contrast, the top photo shows a mock battle between two replica ships from the graceful era of sailing (remember, they didn't have cameras and television in those days). Such a battle might involve the loss of one ship and perhaps fifty to a hundred men.
What is my point? That humans were fighting and killing each other centuries ago. We still are. That technology has changed enormously. We can cause death and destruction on an unimaginable scale now. A major war now could and probably would totally destroy the whole world.
Clearly, our technology has advanced but we have not!
The conclusion? Humans: greedy, bloodthirsty, naked apes, are incredibly dumb.
(Images from Google)