In regards to the "crazies" aspect: I've spent a few months in SF (near Haight St), and 5 years in London. The thing that shocked me most about SF was the shea

In regards to the "crazies" aspect: I've spent a few months in SF (near Haight St), and 5 years in London. The thing that shocked me most about SF was the shear number of mentally ill homeless people on the street. London has homeless people, but they're generally coherent enough to carry on a conversation. In SF it seemed that almost 100% of the homeless were "bat shit crazy" - I pondered at the time if the NHS's mental health care was the difference, and thanked good fortune to have lived my life within countries with social care.