Also, transit lines tend to connect well to mid-Manhattan but poorly between other locations. So if you live in Queens and work in Brooklyn, good luck getting to work reliably by public transportation. (Before you object to that arrangement, consider: If you own a house and have kids in school, you're not necessarily going to uproot your family and move just because your new job is further from home.)
Thus, many ordinary New Yorkers rely on cars to commute to work.
If you need to drive to the supermarket you should have the option of choosing a time and route with minimal risk of traffic jams. I find it hard to belief that many people are frequently hitting bumper to bumper traffics on their way to or from the supermarket. Occupationally yes, but frequently no.
1: https://www.google.com/maps/dir/84-25+168th+Pl,+Jamaica,+NY+...
The population of the tristate is nearly 20 million. Even a tenth of that is a lot of cars on the road.
In fact I’ve often heard people from that area complain more often about lack of parking near their commuter rail station. Which indicates that people do rather tolerate circling the parking lot in their park-and-ride rather then risking stop-and-go traffic jams.
I used to live in LA where Santa Monica Blvd was always backed up. I doubt LA traffic has gotten better either.
I'm surprised by your insolence with regard to how shitty traffic circumstances are in big cities. Simply changing one's commuting times doesn't failsafe the issue.