Coffee is BIG in Texas and while most of the coffee drinkers I know won't touch decaf, zillions of others will. The FDA says it might be dangerous though ...
I had a co-worker that drank one of these every single morning for the entire time we worked together, and now they are impossible to get at your local Texas Dunkin' shop.
With a large menu, highly friendly staff, and overall good vibe, many people pick Dutch as their daily source of caffeination or delicious little treat.