Many computer enthusiasts prefer to buy or build products which showcase their own personal taste. They often choose the best looking case with enough features yet it also has a hint of their own personality. They would hate to go with the masses with an ugly looking beige case and would definitely not want a case that is bland and boring. The same thing would go with their peripherals. Enthusiasts often want a product that not only provides great functionality but also has a great look.
External enclosures are probably one of the most boring pieces of hardware one would see. Almost every enclosure looks more or less the same. They are all rectangular and have a boxy look, and are made with metal or plastic and are used to house the hard drive. Some enclosures have a fan which would add a bit of cooling to the hard drives and some even come with a cool looking light show. Still, they are pretty much the same no matter how you look at it.