I'm terrified of public transit only because of my social/generalized anxiety disorder, otherwise I'd love to use buses and trains. I wish we had more passenger trains in the US.
I don't know where you live, but in PDX it's a hit or miss. If you go during rush hours on a work day in the suburbs, then you are mostly fine. Otherwise... You have high chances of being harassed by homeless people, spat on, threatened, leered at, smelling something awful. So yeah, not divorced of reality.
I live near Chicago, and the worst I've experienced is someone yelling or playing loud music. I'm not saying bad stuff never happens, but it's much safer than driving (admittedly a very low bar).
Live in a city in the south where driving is required. Went to Chicago last year and decided to stick to public transit when we saw how much it cost to park. It was amazing. Sure some people were loud or smoking in the trains, but I could def live like that. Idk what everyone is complaining about with the 15 minute thing
I'm from the South and I always hated having to drive. I think it's also nicer/safer to drive in a place with public transit than without, because some bad drivers know they're bad drivers and will take another option if it's available, plus it just means fewer cars on the road. No public transit just sucks for everyone.