agen_kolar
Super Freak
2) Greater cultural immersion experience. They get to have that funky tendrils at the ends of the hair that allows them to tap into the spiritual side of the Na'vi culture.
But that raises another question. Does this mean that there are no bald Na'vi on pandora? Maybe natural selection might have eradicated te bald gene or something.
In fact, having short hair might make it difficult to ride a horse (e.g. head permanently tilted to one side to maintain connection).
I'm pretty sure the thing on the back of their head is like a tail, but is just covered in hair. All the other animals have those "tail" things on their heads, I just think the Na'vi's are covered in hair.