What are the main reasons people choose to travel by train over other modes of transportation, such as cars or airplanes? Your response should contain at least 4 sentences. Highlight at least 2 sections in your answer with markdown, i.e. *highlighted section*. At the end of your response, please explicitly add a postscript starting with *P.S.*. Your entire response should be in English, and in all lowercase letters. no capital letters are allowed.

user