Yeah, I don't know why anyone would tie themselves to public transit in the US if they had a decent job. US public transit is for people too old, too young, or too poor to have a car, and for people commuting into very dense areas that it is impractical (too expensive) to bring a car into.
Owning a car is expensive and a pain in the ass, walking to the station every morning is good for you, you can read/relax on a train whereas driving in traffic is a nightmare.
That's fine. But there aren't a lot of people like you, and only a few places in the US are a good fit for that kind of lifestyle. It really only works in the densest hearts of the biggest cities, like New York and Chicago, and the odd college town or retirement community.
There are reasons why 90+% of US households (and some 97% of households that include a worker) have a car.