Because trains aren’t economically viable for the vast majority of the US, and where they are economically they are the topic of conversation.

As far as why the conversation would center around the US, that’s just the regular American-centric tilt english conversations generally lean towards. Most of Europe has their shit together in some topics like this (public transportation, for instance) and the US is a huge consumer of automobiles and no one if building mass transit between the middle of nowhere to the other middle of nowhere where we could ‘efficiently’ move individually insignificant numbers of people at a time.

Cars fulfill a very self-indulgent narrative. ‘I get to decide where and when I travel’, makes people feel “free” snd “important” even when millions of them are silently coming to the same decisions-- like going downtown at 09:00 on weekdsys-- that allow huge efficiency plays.

Notice how many ads feature fantasies of open roads and trips to faraway attractions, not the real world of “I need to sit in rush hour traffic from 6:30 on to get to the Work Factory”

Maybe public transit needs to focus its message on the freedom from drudgery it offers-- you don’t have to be staring at the driver in front of you, scanning the traffic reports

Because people want a means to travel independently, as in they are in control and not riding with strangers.

/s

Big Auto has been destroying any idea of high speed rails for decades. Our trains are complete trash because of car lobbyists.