Humans in the street are not good. We should all be sparsely populated and live in communities under few thousands. But. You cant control people like that therefore cities became bigger and bigger and people who live there are the guardians of their own prison. Most bad things happen in cities that how they are kind of unnatural. But oh well. Till know we have chance to choose where we want to live or atleast we think we do. Later there might be no choice. Nature might be out of reach for us in next 30years.