Home Depot is a very different kind of store from the other big boxes

Today I was shopping at Home Depot for a fan. And as I exited, I noticed that a whole front row of parking lots were marked "Pro Customers Only". And I was like, "What? What the hell is a professional customer?" And then I had an earthshattering epiphany. I realized that there is a huge industry of small independent contractors: one-man businesses who y…