I'm not sure we're really disagreeing at this point. Density has a bunch of effects. It creates congestion. But it also creates opportunity. Without the people in New York, there would not be opportunity there. People _wish_ their front door led to downtown Manhattan, and their backdoor led to 100 pristine acres in rural Montana. What people _want_ is what they pay for. And that is to live in places with big network effects, which require large populations.