What is it with People and Free Food Anyway?

This morning there was some kind of meeting or conference on my floor where breakfast had been catered. Well, they must have ordered way too much food and have finished early because there was a feeding frenzy on the floor at around 11:10 or so. All of a sudden there was this stampede to this conference room, like a pack of desert camels catching a whiff of a watering hole or something, and people came filing en masse back through the hallways with plates laden with tons of crap. French toast, sausages, bacon, etc. It was both amusing and sad at the same time. You just have to assume that most of these people had already eaten breakfast by 11:00 AM, and I can guarantee you that most were planning on keeping their lunch plans. There is just something about free food in an office that creates this almost frenzied desired to eat it, with no thought as to why. Now, if it had been an open bar, that might have been different story as far as I'm concerned.