Fashion even dictates the design of hard drives.
Witness my roughly five-year-old drive on the right: red and green lights, angular, hard edges, silver-and-black. A bit cyborg-robot-like.
And on the left, a shiny new Seagate drive: organic, flowing, silver-and-white. Roughly 1/10 the price per gigabyte.
Back when I bought the old model, it was cheaper to assemble one yourself. Now the price of external drives and internal drives is about the same. Good thing! Saved me maybe 20 minutes of precious time.