Econonomies are NEVER perfect. the definition of ECONOMICS is the study of the distribution of LIMITED RESOURCES. IF resources were UNLIMITED and there was COMPLETELY free access to these resources than there would be NO need for the study of economics.
SO any examination of ANY economy will always turn up negatives or things that could be changed or things that could be done better. Examples of such DO not show a poor economy but just show that resources are limited.
having said that, the US economy is weak at the moment, but to say "I was wondering what makes our economy so crappy? shows a certain level of ignorance.
Our economy has been MUCH worse at times than it is right now. overall signs show a possible recovery right around the corner. IF it hadn't been for the 9/11 incident it could be argued that we would have had the SOFT landing that so many economists had dreamed about for years.
HOWEVER, look at things right now, unemployment, interest rates, consumer spending, productivity . . . compared to where those things were during our recessions in the '70's or the '80's (i'm not old enough to remember before that) and you'll clearly see that things are not ANYWHERE NEAR as bad as they were then. considering the SHOCKS this economy has endured during the last 4 years, i'd say that we are in VERY good shape.