Most Helpful Guy
Well you sort of need a longer hair style, to wear a ponytail or other similar do's. Perhaps that's why they have long hair?
Most Helpful Girl
People grow their hair because they like it long themselves. They don't always do it in order to appeal to other people. Also, long ponytails look great compared to shorter ones. At least, they do in my opinion. My hair is medium-length and I usually keep it down, but I prefer longer hair and I find nothing wrong with ponytails.