From Neatorama.com:
In some parts of the USA, BBQ is not just food, it’s a religion. The fastest way to start a fight is not to talk politics, but to argue about the virtues of wood vs. charcoal vs. gas. Even the word itself is kind of controversial: is it barbecue, barbeque, bar-b-q, or BBQ? Just don’t bring it up with a purist (or the one cooking your burger!)
There’s no argument, however, about the popularity of BBQ. The Hearth, Patio & Barbecue Association (yes, it’s a real organization – actually it is just one of many dedicated to barbecuing) did a study called “The State of Barbecue Industry Report”. The 2005 study[pdf] stated that 4 out of every 5 US households own a grill – in fact, 1 in 5 own more than one grill. And not surprisingly, “the primary griller (male) in the majority of households considers themselves to be average or above in terms of cooking skills”.
More here.