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
most people say nicotine because it’s based on their own experience, even though heroin and meth actually are more addictive