Hahahahahahahahahahahahahaha. Pretty much!
I've spent the last 20 years playing with my brain chemisty, and I'm sorry, but I just don't think my nervous system can withstand getting to know the one zeeeelion new dodgy chemicals that Folley mentioned. The classics I well know, what to expect, how they will fuck me up, and to what extent. I can get by with nitrous, MDMA, MDA, LSD, Mescaline, Heroin, Alcohol, 2C-B, Ketamine, phets and whatever else I may be forgetting here...
Good enough for me, I can fill my time with just those, and be a happily munted old raver