Sorry--the Wendy's Health Police guy was standing over my shoulder as I typed that.
Down with Wendy's! We need guvernmint intervention to stop this whole "freedom to choose" thing before it gets out of hand! Only rabbit food that's good for you, at all meals, always! Down with the fascist fast food force-feeding!
Aside from the attack on choice, there is the fallacy that no one ever orders a large anything to share or save for later. On a long drive, it's nice to have a 44 ounce caffinated beverage to sip on over the course of several hours between stops. And hard to believe as it sounds, some folks actually buy a large fry and share them. Or gets a 12 inch sub for lunch (since it's only a dollar more) and saves half for dinner.