Funny... I was just in New York last December (for the first time). I had countless experiences of friendliness. Once, coming out of a subway, we were obviously confused about which direction was north and a woman stopped and helped us (we didn't even ask). I stopped at both Adorama and B&H and got very friendly service (I spotted some empty boxes at Adorama; I needed to ship some stuff home so I asked if I could have them, and they gave them to me with pleasure). New Yorkers are often in a hurry (that's a big city thing; I notice it in Toronto too) but I wouldn't call them unfriendly, at least not in my one-week experience.