Well... having a mohawk, you'll never need to do the "golf test" to see which way the wind is blowing and how fast.
Also, if you're short, and you have bright hair, it makes it easier for friends and family to find you in a crowd/store
Guys dig it. Girls dig it. You can often make people wish they had the balls to just shave their heads and do it.
People go to you for advice on how to dye or style hair...even if you don't know shit.
You can experiment with different food products and household goods and find out which ones have the best properties to hold your hair upright. And maybe find out other uses in the process.
Even if it's all ratty after being up for a few days or weeks, people still think it looks amazing.
You can dye awesome patterns or prints into the side of your head - and get away with it when your hair is down (pending length of your hair).
You find out how many different ways you can contort yourself to get into a doorway, car, space at work, under a desk, putting up your hair, etc.
hmmm