I remember making a suggestion that smoking should be addictive many, many years ago and being told that my idea was "lame" and "would get in the way of RP" or something. glad to see its a thing now because i mean why not
Since smoking is addictive now, though, it would be neat if it nicotine also affected stats, even if it's just a tiny, barely-matters-at-all bonus/debuff. Maybe to luck, because it makes you feel more relaxed? Who knows.