Because you clearly have better things to do than Google.
A: It's to look good while doing it. We recommend our patented Ear Hair Styles for maximum existential fulfillment.
A: It's just the universe's way of telling you to style up your act.
A: No, no, no. That's just absurd. You'll hairstyles for that kind of thinking.
A: We call that the 'Helmet Hair Conundrum'.
It's a thing.