Personally, I would say that "The city is so big" best captures life in the city, because it describes how busy the city is, and how everything happens so fast it just rushes by. It explains that even people get lost in the wonder and chaos of the city, disappearing into life.
Honestly, people are more different then similar on the molecular level however many people may share similarities in life styles,feelings however overall not one person is exactly the same as one person so they are more different
