You make many good points, however I am still not convinced things are quite that bad. I concede they could be, but my outlook isn't yet as dire as yours. Things do have a way of working themselves out, and it is easy to focus only on the negative and begin assuming the worst about everything.
The main thing I'd suggest is that you be careful not to ignore positive trends and statistics where they exist. I've known people that felt sure we were on the verge of collapse, and it is almost as if they began hoping it would happen to prove they were right. You can really put yourself in a funk if you let yourself think that way unnecessarily.
Still, I don't really disagree with much of what you say. Things look pretty glum in my opinion too. The media is helping feed enough optimism into the public that consumer/public sentiment alone is helping prop things up. Another shock could be all it takes for the bubble to really burst. I guess I'd just say I am not really sure yet how things will go. Americans have gotten their act together before and moved this nation in a positive direction. It is possible we may yet rally and turn things around.