That is weird, and saddening. As a lifelong city dweller (primarily Chicago) I love the character, chaos, and depth of dense cities. Visiting some of the big cities in China, I was really taken with their bustling nature, the crowded street markets, the densely packed housing, and the diverse architecture. They seem to me so much more "alive" than the sprawling, strip-mall-filled anonymity of many American cities. I had chalked it up to American's desire for personal space, proliferation of cars and scarcity of public transit options. But I hadn't really considered the effects of zoning and other legal restrictions.