Because dancing is unnatural and un-American. It's counter-evolutionary. Here's the old joke. Why do some strict, and you can fill in the blank with your particular favorite conservative faith system, but why do they never make love standing up? Because it looks too much like dancing. I'm being very serious here. There's some atavistic, primordial reason why we loathe dancing, because remember, no sane man will dance. There are things that we humans do... We is doing a lot of work there, buddy. ...that are, again, atavistic and vestigial. Why do we nod our heads to indicate affirmation? Because it mimics the suckling our mother's breast. Why do we shake our head no? To mimic the action of spitting out something bitter. And why do we dance? Well, the reasons are basic. First... To attract mating partners, to define and mark territory, to evince dominance, and for the most part in human cases, to create the illusion of hot, sexy, and attractive. Dancing indicates a breakdown of structure and control. It precedes riot, societal tumble, and a complete and total breakdown in civilization.