In my opinion it's housing cycles that drive the economy. A lot of people are employed in the construction business, and suppliers of the construction business. Eventually those that can afford a home (and some that cannot) have one. Then prices drop, selling drops, building slows, people become unemployed, payments aren't being made, things like cars aren't being bought, the economy tanks. The current up cycle seems to defy gravity, but eventually it will come to an end. People talk about gas prices slowing things, but lumber prices quadrupled and housing kept going strong. It's when housing runs out of steam that the real hurt comes. Anyway, that's how I see things, but maybe I'm biased as I was in the lumber business too long.