I guess it's what you're used to. I've visited a few times and it just didn't appeal (but then neither did Orlando). I lived in NYC for a couple of years way back when dinosaurs (like Nixon) ruled the earth and it was by far and away the worst place I ever lived. I didn't like anything about it from the self absorbed attitudes of New Yorkers to the constant smell of bus exhaust, burning garbage, and dog squeeze. Not to mention that you had to bribe everyone to do their job. The super would fix anything without a bribe, etc.
I grew up in a rural area of VA and thought I'd never like the big city. Finally I got used to it, though.
Given a choice, I'd live in a rural area again, but with a city within reach. It helped in Miami that I could get out on the ocean or into the back country.
I visit Manhattan at times and enjoy it. But I think the people there have become more friendly than they were in the 70's.