No particular interest in picking on Foer, but I'm mystified by people who own giant houses. People just don't fill that much space. Unless you entertain/have guests *a lot* the space is just going to be unused, and houses are a hassle. Even if you're richer than God you have to deal with the hassles to some degree.
I have about 2100 sq. feet plus a finished basement and a roofdeck and my house is way too big (rowhouses in the urban hellhole are bigger than people think). I don't know what I'd do with a house almost 4x that size. Spend your money on whatever you want, but I just don't get it.
