I live in the San Francisco Bay Area. It is dense here, comparable to a lot of non-capital European cities. However getting around by bike or public transportation is still impossible. I'd love to bike to work. 95% of my commute route is a single expressway, and even though it has tons of room on both sides, there is no bike lane. Instead I would have to make a multi-hour detour, or risk my life biking right next to cars and trucks driving 60mph. So I drive like everyone else...
I understand wanting a walk-able city/town; it is what I want. That said, I've always got the feeling that some don't fully understand just how rural some areas of the world are. Places like Wyoming, Manitoba, or Alaska are going to be biased towards relying on your own transportation for the foreseeable future.
Though I wonder if there would be a future for some passenger rail between larger communities?
And that's fine. The problem is that in North America, if you want real urban, you have NYC and that's about it. And it's stupid expensive because it's all there is. If we can just build up some more cities and create some more supply of walkable stock, things could be so much better. Wyoming can stay Wyoming. Hell, Houston can stay Houston. But we can at least push a few more cities to the ideals we want.