The "community" we have been building for the last 50 years is fragile. It is fragile as a built form and is especially weak as a vehicle for strengthening social bonds. In fact the two, legible building forms and social cohesion, feed off one another. When these things are fragile, we're fragile. Designing the cityscape wisely is still possible when approached properly. It depends on how we measure success.
There are moments when it works; when it seems that there is a community out there, and that it is clearly described in the built environment. But too often places like that were built long ago, by a previous generation and an earlier culture. Their values and conditions were just different enough to create something that one could more easily relate to. This can cause a little bit of confusion, where we misplace our need for a clear and cohesive expression of our place in society with nostalgia.