There also seems to be a stigma against buses, though, where people are more willing to take a train than a bus.

I'll absolutely take a train over a bus if they are going to the same destination.

• train has fewer stops meaning train reaches the destination faster
• train has ultimate right-of-way, and doesn't have to stop for pedestrians on the tracks, red lights, or other things
• trains in some cities, go under waterways meaning more direct routes than busses
• there's more space inside trains and usually more choice of seats. Standing is also an option which isn't allowed on most busses
• acceleration and deceleration are more predictable and comfortable
• nearly all metro light rail trains are powered by electricity, while many city busses remain diesel