I didn't live in Austin, I've visited.
And personally, NY has so much culture (regardless of how native NYers feel about the decline in native NYC culture, the number of different types of people from different countries, in sizable amounts, all in NYC makes the city interesting to me), a ton of activities, interesting architecture and history, great food, great nightlife, the best public trans system, BK and manhattan are gorgeous, it's near water, easy to travel from (easy to get flights all over the us, 5.5-6 hrs to europe, 3 hrs to the caribbean, 6-8 hrs to South America, easy to take trains/buses to all the cities up and down the east coast) , tons of shopping, museums, concerts, broadway, high paying jobs, mind blowing real estate and the true essence of city/high rise living - Chicago has dope high rises also, but has no where near the pulse of NY