A lot of people on Kongregate complain that I always use a rush deck when they play me. My response...tough luck. I agree with TheoCT's philosophy for the most part.
Sometimes I put up a biting farm if a friend asks when I log off (albeit a biting one with big teeth), but mostly I leave up whatever rush deck is my flavor of the week. I do play the game a lot so the amout of time a farm would be up would be minimal anyways.