That doesn't add up to something more expensive than a car? I was in ny recently, and a train ticket on the LIRR cost ~20 round trip. That's $600/month. But, it's better overall because of the traffic to and in the city.
It really depends on a whole host of factors both related to the economics and the convenience. There are a few cities that tend to be particularly car unfriendly. Many where cars are essentially a requirement. And some that can go either way depending upon your lifestyle, where you work, and a variety of individual preferences.
But figure that a car is going to cost some X thousands of dollars a year plus whatever it costs you to park it. (The government rate is $0.57 or so per mile though that may not be that directly applicable to car vs. other transportation analysis.)
Source: I don't have a car, but I do have a motorized longboard.
Also there is not service to/from most of the suburbs.
I'd personally rather pay an extra 20-40 bucks a month for something like BGE Home appliances/HVAC warranty than an extra 30% a month in rent relative to the cost of the mortgage. Oh, and gain equity. And rent the same house to someone else in a few years, have them pay my mortgage, and make an extra 30% off the top from them.
Renting isn't stupid. Buying isn't either, despite how popular that notion seems around here.
I own mine. It is, for me, where I am physically and personally and professionally, a better move than renting. But then, I'm not really a Millenial. (Born 1978, some stretch "Millenial" back to the 1980s, but in life trajectory I'm more "X" than "Millenial". Though frankly I identify with neither.)