What you wrote is a Sex in The City fantasy starring Flintstones as Carrie.
Seriously, you probably could have lived that way as a bouncer or personal trainer in the 80's - mid 90's. Any place that is now popping in NYC is going to cost a fortune. I know young guys with good jobs that are living with 2-3 roommates, till they find a girl and move in with her. Those relationships usually fail because now they're both busting their ass.
Forget having a car usually, parking fees are $300 - 400 for a safe place in the city. On street parking is a big pain in the ass. Driving in general is
.
Your supermarket food bill will probably go up 30% over what your paying now in the city proper. A lot of younger folks wind up going to the outer boroughs to get food, etc.....
All that awesome nightlife you heard about? Mostly gone because of -
en.wikipedia.org/wiki/New_York_City_Cabaret_Law . They repealed them last year, but I doubt the club scene will be coming back.
There is some cool stuff, like the museums, libraries, galleries, etc.... , but if that's not your thing than
. And you can still find great food, and there are beautiful women of all flavors.
New York was / is great if you have real money to enjoy it, are in a field like entertainment, or are old enough to remember the fun things back in the day. But most folks just wind up regular working stiffs just like everybody else
.