I initially began my drug quest about 12 years ago looking for the "hardest" drugs I could find- LSD was among them in my mind, as was MDMA, heroin, speed, coke etc. I naturally started taking MDMA then LSD and then speed, cocaine, and then ever upwards, into more exotic and demented psychedelics and also more addictive things such as pharmaceuticals (mainly benzo's and sleeping pills) and opiates (opium, morphine, heroin, codeine). I limit my use DRAMTICALLY of opiates because I feel their pull even after a single use. However, I snared myself on valium, mainly taken for anxiety which of course exacerbated it and thusly I have to take quite a lot now to simply maintain. Frustrating but liveable.
Psychedelics can open your eyes in ways that may actually be 'delusional'. I initally started scorning societies ideas of safety and legality and, seeing it as a game (which it largely is, but with some rules) tried to invent my own rules; such as being able to take silly amounts of addictive drugs and alchohol and whatnot, as well as ingesting LSD at a stupid rate. I don't think, had I not taken psychedelics, that I would have ever injected anything, and I don't say that as a completely bad thing; its simply that I saw through the irrational fear our cultures have of such drug use, and the pathetic stigmatising. However, did that mean that I had to go and actually do these things? Absolutely not, and thats the 'delusion' part.
I wish psychedelics weren't considered drugs in many ways, becasue I think we all have a little vault in our brains where we label things, and society deems psychedelic substances to be almost purely a drug; not a medicine (which can be the same thing yes) or a sacrament or even a living-spirit. Thats unlikely to change.
I think that if your hedonistic at all, then your naturally going to be probing the barriers of conciousness with any manner of drugs and ideas. It makes sense that psychedelic users are into other concousness altering methods. I personally find opium and morphine especially to be very 'mind-manifesting' (not saying psychedelic) and so there is also that appeal. Benzos and general trnaquailisers, I couldn't justify in such a way
excpet perhaps zolpidem, but my tolerance allows me to eat whatever 12.5mg X 18 is in 10 hours. Blerggh... The 'first' drug experimenters, like Crowley, were using peyote and hash, but consider things like cocaine and heroin to be 'vessels of the spirit'. Times have changed, but the drugs haven't. Well, they've simply gotten "better" if you want. Anyway, end rant.