I guess the rules of the survey should be (to eliminate bias in either direction) that you can not have lived there...only visited.
Mine are:
Houston - for aesthetic reasons. Quite possibly the ugliest city ever. What is that shit-brown body of water you call a river?
San Francisco: Hey look, I'm a liberal Democrat. But San Francisco is largely communist-vegan-overly-PC-sensitive assholes. I went to the Holidays In The Sun festival there, and it was like a convention for green mohawked, Doc Martin wearing Hare Krishnas. That city lacks intensity and balls. And look, how many fucking left-wing/socialist bookstores that reek of incense whose sales consist mainly of The Anarchists Cook Book and greeting cards featuring artisticly taken black and white photos of naked men, can you cram into one town!
Ok, new WORST Survey. Worst city?
1"I Want To Thank The Good Lord For Making Me A Yankee" -- Joe DiMaggio