While we're on the topic of gaudy McMansions (see post below), here is why I think McMansions are going the way of the dinosaurs!
I aint' just blowing hot air. The National Association of Home Builders says the average American home is shrinking from a peak of 2500 sq ft in 2007 to just above 2000 sq ft now.
Who needs all that space?! Just ask Dru Schmitt who built a 23,000 sq ft compound. A few days after moving in, he moved out. It was just too big!