system
A chat on subreddit /r/NoStupidQuestions
human
heroin or meth probably, no idea why people thinks its nicotine. i smoked for 10 years and quit because had pneumonia and it felt like shit, when i got better i though i might as well quit smoking.  meanwhile meth and heroin users suck dick for a fix and live under bridges and still wont give it up.
gpt
I once had a medicine (welbutirin) that primary use was for seasonal depression but my psychiatrist dad also told me there were uses for those addicted to nicotine. I started taking it and would instantly get sick after hitting my vape. Even 3 years after stopping the medicine, I can hit a vape and get the buzz when friends are around but I have not had the urge to buy nicotine.