Oh, no mistake there - I apologize if I suggested that as a problem unique to SF.
I meant only that SF, despite its reputation, doesn't get a pass on the "cities suck" vibe. It did have a few nice neighborhoods; and I'll even admit I felt relatively safe walking around at night (though I stayed on the "good" side of the hill). But beyond that, it has the qualities all cities necessarily have - Too damned many people, too little public transit, too many beggars, too much traffic, too loud, too bright, too expensive (I've never understood that last one - Supposedly, dense populations reduce the cost of living, so why does everything cost more?).
But no, nothing against SF itself. Mostly just disappointed it doesn't live up to its reputation.