I traveled to SF a number of times with work 2 years ago. I'm not trying to sound like a smug social democratic European, but I couldn't get over the homelessness, the petty vandalism, the rubbish, and the overall air of menace in the place.
Your trying to compare apples to apples. SF is an apple, but the US is one big orange.
My boss said it was like watching the walking dead with 'zombies' everywhere.