The People of New York have an extremely expensive infrastructure to maintain.
They also have higher incomes, higher property values, higher standards of living, more job opportunities, etc.
There's always a tradeoff.
If you don't like the tax burden of maintaining the city, move to Idaho.
New York City is rich partly because of government investment. The transportation infrastructure allows higher population density and faster commuting times. Both of which increase wealth.
It is expensive to live in the City because lots of people want to live in the City. (Duh!)
Why would anyone want to live in New York if the place was overrun by criminals and falling apart?
Top line is total population.
Blue=Manhatten
Green=Brooklyn
Orange=Queens
Red=Bronx
Purple=Staten Island
In the 1970s, the City fell apart. They cut spending on everything and quality of life collapsed. Needless to say, people moved out in droves.
The City is trying to avoid doing that again this time. If it means higher taxes, so be it.