Nice flames, apparently that's all you do to people who think anything different from you. You're classy!
It's dumb when people say they listen to all music, and people who say that are only saying it for one reason: To make themselves look cool.
No one listens to all types of music, and if you say that, you not only are trying to look cool under false pretense, you are showing how ignorant you are of music. There are so many different types of music, ie art, that is out there.
I'd bet my bottom dollar you couldn't recognize the origins of Hardcore Music in Black Metal as in Burzum, Bathory, Venom, or of Contemporary Metal and Hard Rock from King Diamond. Maybe you do, but do you know the pioneering of mainstream contemporary trance by the advent of the internet pushing Paul Oakenfold, Paul Van Dyk, Armin Van Buuren to recent fame? Would you know that KISS copied their image from Alice Cooper, that rap came from African origins, or the influences of The Beatles?
To say you listen to all types of music simply shows a profound ignorance of the whole art itself.
Chemicals themselves can't be "enlightening", however that chemical, like you said, changes the way your brain thinks. It let's your brain see things from a completely new perspective.
There tends to be an elitism about psychonauts that is not found in users of other drugs. They proclaim enlightenment and all sorts of, quite frankly, bullshit, that comes only from using their drug, MDMA, LSD, ketamine, et cetera. Psychedelic drug use doesn't do much to alter your mind in a way that couldn't be done in other ways, and I think that people who do claim altered perspectives from drug use had predispositions to change their perspective beforehand.
I mean really, what useful things has anyone gleaned from psychedelic drug use? Now, I'm not knocking their power, I personally have tripped acid hundreds of times. If you can withstand a strong acid trip, you can take anything that the week's doledrums can throw at you. But the idea that somehow you got insights that can't be ahieved any other way is extremely myopic, which, I think, perfectly describes psychonauts in general.