I am nobody important living in rural middle of nowhere, but visited SF twice for work, and it was the most horrific city I have ever been to. I am a big man and didn't feel very safe.
About 20 years ago I was visiting SF for work and, in a moment of weakness, let someone else book me a hotel - they booked me into a rather rough hotel on Geary. When I got into a taxi at the airport the driver said "Do you really want to go there?".
