Psychological safety matters just as much as physical safety. If you think that you won’t see some shit on public transit I welcome you to come to LA and take the red line for a day.
I think the latter is the important thing. It's not normalized as a viable means of transport in the land of the automobile.
If it was closer to 1 in 100 people on the train displaying unusual behavior, it'd be a far less unnerving experience.
btw I live in Tokyo and moved here explicitly because of public transit.
Just got back from 3.5 months in Europe (17 cities), and yes it’s vastly better there, far more clean and sane. Still, coming back to NYC I’m not not taking the subway despite spending nearly my whole life in SoCal. It’s easily the better option over owning a car if you’re in Manhattan/Brooklyn.