Much of what has been said is true. Many people who believe that any artificially created state of mind isn't worth anything are very short sighted. The fact is that hallucinations arn't really enduced rather they're unlocked (psycopharmacological study). Psychedellics disrupt the neurochemicals that seperate sub-concious thought, memory, and concious perception. So what you're seeing with psychedellics is whats actually happening throughout different levels of conciousness and perception.