I can see piles of trash left from former homeless encampments on the side of the highway from my downtown Seattle office, so I guess Seattle is a shitty city too.
Doesn't make the entire city shitty, but it's not excusable either. There are much poorer cities (in relative poor countries) that don't have that problem. Also, the fact that you're defensive about this gives us a clue as to why the problem persists.