As a New Yorker I'm always amazed as to how inconvenient of a city San Fran is. The BART has one track in the city, the Muni takes forever, walking is an absolute pain with all the hills, and there's so little mixed use development that you can really feel confined in many neighborhoods. Everywhere can't be New York, but cities like Boston and Chicago and D.C. have done a much better job of urban planning.