Why are gays not allowed to marry in N.Y.?

Im not gay, and im not spicificaly asking for your opinion on gay marage. It just seems strange that Vermont allows gay marrage and N.Y. doesen’t. At this point in time I would have thought the government whould completly stop segrigation. I wen’t to NYC and theres TONS of open gays, and we have a black president for crying out loud! I just think at this day in age we would have moved forward by now.