I'm not claiming everyone who lives in sprawl does it because they want to, but these people then turn around and support measures that reinforce that, like any regulation that makes driving more safe. You're right though about NIMBY's, but that's why I said "middle and upper middle," as in people who do have a choice and some latitude in their choices. Even if no individual is the source of demand (which is true), in aggregate their demand reinforces the system.