My vote goes to Lompoc, California. It is the cesspool of California. I thought it would be nice since there was Vandenberg Air Force Base and Nasa within a few miles. Instead, I found the Medi-Cal (state welfare) fraud capital of the state, thanks to Santa Barbara county and it's lax formulary for welfare drugs. Everyone there gets Soma and Vicodin and a "Jazzy" or something like it (a motorized cart). It's also very windy every day.
My next vote goes to Topeka, Kansas. I'm too tired to go on.