When people leave the city and feel an unanticipated sense of relaxation, it's because they were used to living in fear and looking over their shoulders all the time, and they don't need to do that in their new surroundings.
Addiction, homelessness, and antisocial behavior are problems on the public transit of every major city but I would like to challenge you to ask yourself why we assume the natural response is fear when rates of violent crimes are at or near historic lows.
Mainly in America. I never saw that kind of behavior on any transit I ever took in Europe or Asia. They simply would not tolerate it there. Yet again this is our government in the United States failing to control something that other countries can deal with.