I commute to work by train everyday. In the mornings the commute is usually crowded and filled with conversation. There are a few women with whom I have become friendly and we can get a bit boisterous on our 20 minute ride.
But in the evenings the train seems quite empty and silent. The morning women take different trains home and I notice that many of the people around me are tired.
We all just slip into our seats and watch the darkness arrive.