I quit about 10 months ago and it sucks hearing from everyone else who has quit that the fucking cravings never fully go away.
Quit 18 months ago and stopped having cravings something like 6 months in. I really just give no shits now, and a bunch of my buddies still smoke.
There were maybe like 3 instances where I had a fleeting 2 second thought of: "Now would be appropriate for a smoke!" and they were all circumstantial, not just my body actually wanting one. Fuck that nonsense.