And of course when it comes to human beings, it's no different. The bigger "predator" you are, the better/longer your life will be.
I'm certain that's the reason so many people were fascinated with the end of the world. Even those who don't realize the mentioned mechanisms of our world, feel it subconciously. You can't change the universe's laws, that's why doom is the only thing you can hope for (And of course it won't come).