I heard once, and this is by no means an original thought, that the entire course of human history is a litany of blood. Ya know, after 'X' amount of years of evolution, you'd think we would learn how to not kill each other. Instead, we just got better at it. You know a great example would be to look at the history of China, well Asia in general. Our populations rise up and then we were cut down by the greatest predator we'd ever known; ourselves, meaning other humans, meaning that guy standing next to you at the bus stop.
There's actually a good graph depicting predator-prey relationships. Its not new or ground-breaking science, we've known of this relationship for years. The fox hunts the mouse, when the mice's numbers dwindle the same goes for the fox. Then the mice spring back up again, while their predator sits on the low end of the population scale. Then guess what happens, the numbers of foxes begin to rise again.
Let's look back at human history. As I said we rise up, then we cut ourselves down. While we're low, the ones that did the killing get to enjoy maybe a couple hundred years of pax Romana, but soon the time will come for the killing again. It was and is an ever repeating cycle that lead to our eventual doom.
We're killing ourselves. How stupid is that?
By the sword; bronze, iron, steel, titanium.
That's more than the population of the town I used to live in by six hundred and sixty-seven times.
Bullets cut through our flesh like a hand through water. The larger the bullet, the greater the trauma.
We never learned how to stop. As our numbers grew, so did our efficiency.
There is no more you and no more me. We rise up and we are cut down. Eventually the world becomes very empty, devoid of human life, as well as animal. In our petty squabbles we took damn near all of them too.
But its not the end. Cliche as it may sound, life finds a way. Though we tried our damned hardest to take the planet with us in this ugly divorce, there is still somethings we'll never be able to extinguish. In the absence of humanity the other species reclaim the planet. Cats inhabit our rusted iron monoliths. Fish swim through sunken subways. Birds reclaim the devastated forests. Insects thrive without all our foreign, synthetic chemicals.
Life doesn't end when we do. It's foolish and selfish to think that we are anything more than just animals. The only difference is that we're exceptionally good at killing.
[Ok, I need to give out some works cited for this one: Mass Effect 2, East Asian History, wikipedia for helping me with numbers, that imager album, and old history channel specials.]