Ok I don't want to offend anyone, so I apologize in advance if I offend your favorite city in the world. Really.
Lincoln, NE: there is NOTHING, and I mean NOTHING there besides the university, it is so depressing. Well and the Capitol building but that's boring, and the rest of the city sucks.
Columbia, MO: even though it was my home for the last 5 years I am glad to be gone, the city is empty it seems for those not attending the college. But it is beautiful in the spring and fall.
Myrtle Beach, Panama City, South Padre, and other "spring break" type cities in the U.S.; yuck. Actually, I will just add the entire state of FL to this group b/c I don't like any of the cities I've ever been to there. It's too hot and every city just seems really cheesy to me, maybe I watched too much Miami Vice but that's all I think of whenever I visit any place in FL.
Anywhere in the Dakotas, Montana, Wyoming, or Idaho...I sometimes forget the states even exist. I'm sure there are nice places there, I've just never been to them or heard of them.
And also anywhere in the state of NJ, some of my mom's family live in Jersey...I cannot handle that state.
Cities I love: NYC, Boston! (I'd kill to live there), Dallas (though we only lived there for a few years, I loved it despite the hot weather), a few places in WI (if only it wasn't so cold in the winter, summers there are beautiful), Kansas City and STL (maybe b/c I know so many people there from school, but I think both places are lots of fun and would be nice to live in), Chicago, and my secret that I am ashamed to admit...my birthplace and home, Omaha!
Ok sorry that was long.