If we can't work something out, we like to have an assumption to fall back on. Gives us security, because we like to know things. Stuff. We can see this through scientific experiment, the constant questioning of our existence and the world around us, and the appearance through the ages of religion, to comfort and explain.
You know what's not simple? People.
Think about objects you can put into nice categories. Cars, bicycles, trains, and a finite number of objects we ride on/in are 'methods of transport'. French, Japanese, German and Sign Language and a finite number of ways of communication are 'languages'.
You know what you can't put into categories? People.
We wish it were easier. We wish there were good people and bad people. Did you know that under Gaddafi, Libya's literacy rate went from below 20% up to 85%? Jus' sayin'. Good people to bad things sometimes, and bad people do good things sometimes.
There aren't only normal people and weird people. There aren't only people who think like you, and people who don't. There aren't only atheists and religious extremists. Everybody's a mixture of everything, and we all believe little bits of everything.
You see, the problem with the boxes and the labels and the filing cabinets we insist on creating for everyone else is that soon you put yourself in one, too. The two categories which follow logically are unfortunately, 'Us and Them'. It seems so unfair to ourselves, is the human race really as boring as all that?
Let's celebrate our differences, and love our individuality. Let's recognise that the categories containing humans are infinite, as much as are the fingerprints we leave behind.