2) Your characterization of light rail does not remotely resemble the reality my partner and I have experienced in the Boston area. We have yet to ride in a rail car that "smells like piss". It's fast, safe, and inexpensive. We do not have to worry about enduring property damage to our private vehicles, or injury from other drivers. I suspect our experience is not unusual among MBTA riders; per the 2015-17 MBTA Systemwide Passenger Survey [1], 70% of subway riders have access to one or more cars and 82% hold a valid drivers license.
2) In my experience Boston was _the_ best light rail system in the US I've ridden by far. Only China was better (because it ran at faster travel speeds and had more modern train cars). You should come to the Bay and experience BART for what light rail in other cities is like. I recommend the Civic Center station and any of the Oakland stations for the optimal experience. Bonus points for if you decide to walk for more than 1 block around said stations at night.
Public rail in many places is a dangerous, dirty, and chaotic experience. A gritty, anarchistic, and truly American experience. Yet, this is why I loved it. I hope it never changes -- a complete departure from the sterile, arrogant, and uninspiring clinical reality of air travel. I'd rather be stabbed on the red-line than watch it descend into a dystopic clinical, authoritarian, dressdown administered by the TSA in the name of safety.
[1] https://chicago.suntimes.com/crime/2022/3/27/22998488/cta-wo...
I think there are other (unacknowledged by public transport advocates) concerns people have with passenger rail. Namely that every light rail car in every major city smells like piss already and feels much more unsafe than your own car. Until that reality is addressed and mentally ill people are not permitted to share the same space as normal, functioning members of society, people will continue to choose their own private transportation whenever possible.
If you don't think this is a reality then you should take a look at some of the shit that happens on BART and NYC subways. My chance of getting pushed off the platform or being the victim of a racially motivated hate crime is 0 in my own car.