New York.
I feel I have to stick up for LA though having lived there for nearly 20 years. People say 'I went to LA' but if you literally only went to Los Angeles then no wonder you think it was awful. Greater LA is made up of over 80 different cities each with their own culture and heritage. Burbank is completely different from Santa Monica, Pasadena is nothing like Manhattan Beach, Palos Verdes is as much like Bell as Chelsea is like Slough. There is a ton to do in LA from botanical gardens, art museums, theme parks, historical areas, shopping, hiking through mountains, restaurants, beaches, whale watching, boat trips. There has to be something you like there.