What is the point of train passenger travel?

I was wondering what the point of trains and subways are when 1) they cost a lot more money to build and maintain vs. bus transit, 2) once built, their routes inflexible while bus routes can be changed as pleased, and 3) trains and subways are costlier to maintain than buses Why then are people still advocating... show more I was wondering what the point of trains and subways are when 1) they cost a lot more money to build and maintain vs. bus transit, 2) once built, their routes inflexible while bus routes can be changed as pleased, and 3) trains and subways are costlier to maintain than buses

Why then are people still advocating for heavy rail when it clearly loses against bus transit?
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