For what it's worth, I lived 7 or 8 places in about two years when I lived in NYC, in pretty much every Brooklyn neighborhood within a 20-40 minute radius from where I worked. Saved lots of money too - never lived alone, did social stuff in my neighborhood, took full advantage of the City to the best of my ability. After all that, I came to the following verdict: NYC is stupidly overpriced and has a substantial quality of life problem.
I am admittedly a non-native, so perhaps some of the finer charms of the City will always be lost on me. But I don't know - I'm living in Berlin right now, which isn't _too_ drastically different, and can't say I find myself missing NYC at all.