As a kid, I argued the logic of drugs and proper practice, before I ever did any drug I'd read about it for days and picked a set and setting that accomidated it.
Hindus use OPIUM to soothe the heart and even reach the higher planes of consciousness
Rastas use marijuana as a tool to reveal you to yourself and eliminate desire.
John C. Lily used Ketamine to inspire, as the man who put together the serpent and the structure of DNA was on LSD. Mathematicians and the greatest world leaders and the soldiers dying for them (John F Kennedy, Hitler) used amphetamines daily.
There is no negative experience, just negative experienced, and to be enlightened, to me, expects this mindset. And while you might not seek drugs, it is bad karma to deny them if you are strong enough to hang or you could gain something from them, just as vegetarianism is situational.
I've never had an in depth conversation about consciousness with anyone who hasn't
usedhallucinogens. My most recent experience was with an experimental psychedelic know as 2C-E, in a HERO fucking dose, and viewed myself doing the cosmic dance of life as my energy field expanded across the world and interconnected me, then I felt everyones consciousness pick up on my vibes, then panic, then sexualization of the trip, then I watched the whole world try to fit in my life, concentrating my ego to the point of believing I was Jesus,and the whole world was built around me as it got smaller until it became exquisitely complicate in a small area with ultimate euphoria, then a slow degradation of this world due to mental pollution to the point that faces in the hospital I was in were decaying before me as my own heart died to the beat of itself and the world got dark and simple as I reinforced myself with "and I am me, and I'm Ameen", then panic as I realized I was strapped to a bed in a red room in the pattern of the dance of life, and then the nurses wouldn't leave me alone haha.
It humbles you, breaks you and then let's you watch yourself come back together.