I stopped taking hallucinogens when I hit adulthood (read: after undergrad). Responsibilities fukked with my trips. Very sad. Can't wait till I retire and can trip peacefully once again.
Been an advocate of feeding my head, in every way possible.
Also, Meth - never knowingly ingested that bullshit. Thought it was coke one night. (subsequently I dropped some LSD earlier that evening. Thought the acid was bunk, and ended up at the assholes house who sold it to me at 5am wielding a gun and demanding my money back.) Upon reflection, I think the line of yayo - that ended up burning my nostril because it was fukking meth - is the reason the LSD wasn't sitting right.
Apologized to the aforementioned asshole a few days later. He understood. Strange turn, as he turned into a wild tweeker not too much later in life.