I came to US ~5 years ago and spent most of my time in SF. In my home country we had no homeless (ok, probably not like 0 but nowhere near close to SF, I've nev

I came to US ~5 years ago and spent most of my time in SF. In my home country we had no homeless (ok, probably not like 0 but nowhere near close to SF, I've never seen a homeless person in my childhood) ao I thought this is an American problem. Now I'm living in Boston and there are surprisingly few homeless people. It's obviously not 0, I still get to see homeless sleeping in subway, streets etc but the difference between SF and Boston is day and night. SF has a ridiculously concentrated homeless population.