It goes to the core of our troubles. Political, religious, social...you name it. We like to think that we can comfortably call ourselves "part of the great sea of humanity" but in reality we are all scared to death of being singled out, left behind, shunned and generally made fools of for being different. That's why we crave conformity. I don't mean that's why we want everyone to be the same. Just the same as us.
It's why we argue a point; to try to get the other person to agree with us, not just to see our view. It's why we preach gospels; not to enlighten but to substantiate our own beliefs. It's sad. It's lonely.
So wake up world! We're all different. We're all alone. And we belong together. It's OK.