An unusually perceptive article from Cracked.com about how we use stories to inform our worldview:
Thousands of years ago, when your ancestors were living in tribes and hunting gazelles for food, nobody knew how to read. Even if they could, paper wasn't a thing, parchment was rare and precious. They had no written historical records, they had no educational system that could devote years to teaching history to the kids.
This was a problem. Once humans started forming civilizations, the guys in charge didn't just need the next generation of children to know how to fish and hunt, they needed citizens who would fall in line and fight for the tribe. That meant the kids needed to understand the big picture: why preserving the tribe is important, why we hate the tribe across the river, why our tribe is better than that tribe, why it's important to go off and fight in the next war no matter how scared you are.
Now, to do this, they could either A) bore the kids to death with a years-long recounting of the history of the tribe, which nobody has probably written down anyway or B) tell them a cool story. They could tell the thrilling tale of Kolgor the Valiant who, when the evil neighboring tribe came to slay all of the women and children, stood alone and fought bravely through the night, with four arrows in his chest, until the enemy retreated in terror. You want to be like Kolgor, don't you, little one? Otherwise, he will have died in vain.
Read the rest here!
There's a very interesting bit in there too about the small choices a writer can make to trigger a certain unconscious response in the reader or viewer. I'm ashamed to admit that I never gave any thought to the fact that Spider-Man, Luke Skywalker, and Harry Potter are all orphans...