[ragandbone]

Well, I may come back and delete this. Really speed is the only drug I ever abused, and I started taking that in high school so I could study for the AP exams, and still do creative work. Otherwise, most of these drugs have been ingested in the spirit of experimentation, and some in spiritual quest, esp Ketamine and Mescaline and DMT.
I rarely drink, and haven't done any drug at all in over 5 years.

pot
hash
Black Beauties (Benzedrine)
Quaalude (methqualone)
dexedrine
Crystal Meth
Coke (have some sad stories of fortunes my friends lost on this overrated drug)
Ketamine
LSD
MDMA
Foxy
Psilocybin mushrooms

Also:
ritalin
PCP
heroin (smoke)
Crack

These I took just once, and the PCP was accidental, as I was seated next to someone who was smoking a Sherman cig laced with PCP, and she puffed away neglecting to tell anyone, until none of us could get up from the table.
I tried Crack once as a favor to a friend who was hooked and who asked if I would try it to see if I could understand her experience. She believed I wouldn't get hooked, and she was right—an awful, un-fun drug!

Also:
Mescaline
DMT

These fit into that spiritual realm, aloong with the K listed above.