I was just in San Diego. Homeless people were everywhere. I heard that Vegas is literally busing homeless people out of Vegas and into San Diego. Apparently the homeless problem is even worse in San Francisco. That's insane to me.
So while the city does have a ritzy tech feel in the right parts, it is disconcerting to know that amidst so much concentrated wealth there are a lot more homeless people than you would expect. Really, a lot.
Unfortunately it's not as if these are all down-on-their-luck folks in between attempts at The American Dream. A lot of homeless people - in SF and in general - have mental illnesses and addiction problems and they do need help.