Pretty, you'll love Louisville. Check out
Home Page as well as
Louisville Mojo: Louisville News, Events, Classifieds, Louisville Blogs, Forums and personals to get plugged into what is going on socially. As far as where to live, it depends on where you are working. The easiest answer is the Highlands for someone your age. I like the Frankfort Ave corridor a bit more though personally.
South, what industry were you working in? You sound very bitter about Louisville and although I don't know you entire situation, the sooner you make your move, the sooner you can get on with being happy. The metro Louisville area is over 1 million strong and there are a VAST MAJORITY who love this city and what it has to offer. For whatever reason, it didn't work for you. Good luck in your next city.