It's great to be proud of ones job, but the way you describe it makes it seem as though without someone to hit a few register buttons to ring up shoes that sell themselves, the entire shoe industry would crash. A lack of people to "sell" shoes is not and will not ever be an issue. Nike/Jordan and other companies GIFT your companies with a license to print money when they ship you ANY shoes. The only thing that keeps you in a job and you any afloat is charity. The shoes would sell just as well if Nike simply decided to be the only distributor of shoes.
At the end of the day, all of the other companies such as Finish Line, Footlocker, Footaction, Eastbay, etc are not necessary. Being a sales associate at one of the retail stores is a cushy, stand around, talk shoes, and attempt to sell customers some extras they don't need type job. They ALWAYS have more people who want to work there and could replace the entire staff at a moments notice if necessary. So your statement couldn't be more false about without you, we'd have no where to get our kobes. Sure we should, directly from Nike without ever leaving the house. Appreciate your job, but don't actually fool yourself into thinking you're irreplaceable, or even needed.