I haven't read through all this thread but I just got back from SF today. I was born and raised in LA and live here currently. I went to college in Norcal and I've been to SF many times during my college years. I always disliked northern California compared to southern California. The weather sucks (cloudy 75% of the year), the women aren't good-looking, and the main attractions just aren't that fun for me.
With that said, I haven't been back in 7 years until this weekend. I had the opportunity to get a free flight to SF so I thought I would give the city another chance. I did most of the touristy things this weekend:
Ferry Building
Chinatown
Fisherman's Wharf
Golden Gate Bridge
Golden Gate Park
Union Square
And just as before, the city just disappointed me. I didn't have much fun even though I went in wanting a good time. I enjoy Chicago, NY, and other US cities. SF ranks near the bottom of my list.