Honestly I think a lot of people have a mild version of PTSD in regards to the economy. Many people suffered, lost their homes, lost their financial stability, etc. and after such a traumatic financial and emotional shock people refuse to accept that things just might be stable and improving.
Really it comes down to perspective and state-of-mind. People say that the economy is not getting any better but I don't see that. I don't see a horrible economy to begin with. I've lived through times that were worse for me personally and for the community/state in which I live.