I have never really felt the allure of living in a big city. Higher cost of living, smaller living spaces, noisy neighbors, rats apparently...
Cities are great when you're young.
I moved here when I was 24, and I loved it for the first 8 years. Almost overnight, when I was 32, I realized that I actually don't enjoy living in the city anymore. It's loud, expensive, I don't really do "indie" restaurants, I don't like most art, and I'm married so I don't really need more romantic partners.
I still live in NYC, purely because my current job won't let me move, but I have been looking for an escape.