I've been sober for about the same time (Feb 2 2009 was my last drink), and I have a similar situation regarding the urge to drink. It's just no longer there. Last week, the waiter misheard my order for a ginger ale and handed me a gin & tonic instead. Not even a moment of hesitation nor temptation which I might have had during my 'quit for a month' periods. And, today I even made a traditional coq au vin with a bottle of Burgundy. Not even a fleeting urge to even take a sip.
However, I am still going to AA and about to do a 4th step with my sponsor. I have a number of reasons for continuing... I remember my initial fear of recidivism via drunk dreams and the like during my first two weeks of sobriety - I don't want to get too cocky. Also, I'd like to go through and complete all 12 steps - especially if it will allow me to help others as they have helped me. Finally, I confess I enjoy the fellowship and that is part in why I keep coming back.