And sure, some people do like living closer to nature. I acknowledge we have a nice core of people who love nature and land and cultivating the earth, what have you --they can still have their smaller ag-centered communities.
Are you suggesting we should give up our right to chose where we want to live so you can have more small cities?
Perhaps there is compromise? Perhaps this is really only a real problem in SanFran and NYC. Even NYC has The Bronx and good rail service.
The problem isn't sparseness or density, it's a combination of readily available fossil fuels and mindset, I believe.
If the position is simply to oppose cars altogether, then I don't know where you can go. But I suppose you can find a bus to take you there...