It is really just a misunderstood, albeit extreme, form of confidence. I know I'm arrogant. I'm good at everything. Learn how to take a joke. Life will get so much easier, and you'll find yourself laughing now and then.
Tolerance is key to happy survival.
Tolerance of ignorance is key to quick demise. Don't hit girls. Humans have to believe in something. There is nothing wrong with that. Find what you believe in.