I think it was 1984 when I gave up. My wife (now X) had said "You must give up otherwise I won't be able to!". I did but she didn't even try. Two weeks later I rolled her a cigarette, lit it and inhaled. It tasted like I'd licked the bottom of a used ash tray! (remember them?). I've never hankered for a smoke since. I am shocked at how much it would cost me today.