Hairstyle have traditionally been significant in expressing a lot about the individual , for example in ancient India and Egypt , the royal families would be wearing their hairstyles differently and decorate it with ornaments to emphasize their status . Similarly having small hair was also associated with religious faith , Catholic nuns often shaved off their heads leaving just a ring of hair around the bald crown . Modern hairstyles however , are more indicative of one's fashion-statement , their lifestyle .
Medium sized hair are the best way to go while in a dilemma , easier to maintain (adequate shampoo usage) , keeps your scalp cool and is much more hygienic than having longer hair . Short hair or a bald look is good but in order to pull that look , one needs to maintain his shape (Vin Diesel , Jason Statham) . Long hair , almost every man has had them at sometime or another (mostly college!) but this look expected from the rebellious kinds painters , artists , rock stars , heroes , etc . Statistically this category is most famous among men as it is an acceptable look for official standards and also considered to be a fashionable look.
Moreover , there is a wide range of hairdos to go with in this category , you can try new things at different occasions , comb it sideways to get a uniform partition of hair making you look striking in a classical sense (James Bond - Pierce Brosnan). All hair combed to the back giving a mafia look (like in Godfather) . Comb the hair from both sides towards the middle which is a relatively new style . So there is more range of experimental possibilities than other hairstyles which is also one of the reasons for it's popularity.