system
A chat on subreddit /r/NoStupidQuestions
human
Booze, in my experience is the worst. I struggle with addictions to ANYTHING, so meth and heroin (or any opioids) are in the "not even once" category for me. My doctor wanted to prescribe percs for after a surgery, it was a hard no for me. Pain passes (in this specific case), addiction is forever.

Point being, this is askreddit and people can only provide their own experience. And I agree with you, just making sure that was clear, text can be hard to convey that.
gpt
Addictiveness and availability are different things. I drink because it's easy to get and has less impact on my life than other drugs I've had. But in an imaginary world where cost and accessibility aren't a factor I'd probably go back to heroin. 'not even once' is great advice, you can't un-ring that bell.