Maslow created it as a psychological tool to... Um... Well, pretty much make fun of people who are only into those things in the yellow area at the bottom.
|Ha! Stupid people who care about breathing.|
The idea is, everyone starts at the bottom and works his or her way up. Not everyone makes it to the top, but you're supposed to try.
It struck me that the same thing is true about Facebook. In the beginning, everybody posts the same stupid crap over and over again. It's only after years of work, do we move up the hierarchy Here's Maslow's Facebook Hierarchy: