The nagging twitch is still there (which tells you something since nicotine is out of your body completely in about 72 hours) but I just keep giving it the finger.My grandfather quit on a bet, after smoking for 20 years. Up until the day he left this earth, he would have dreams about smoking. He was an alcoholic and quit that too, but never had the desire to return to the bottle as much as he did the pack.
I think it's the speed and lightness of the buzz. Alchohol gives you a noticable buzz that lasts, you can avoid drinking by not wanting the buzz. Cigs give you an almost imperceptable buzz, reality just mellows out. Any time you're under any stress, whether you've smoked before or not, you want to lower your stress level, if you've smoked you know a magic little stick that will instantly lower your stress.
That's what makes the twitch. If you'll excuse me I need to kick the cat.