Psychedelics seem to somehow have simply amazing PR: plentiful testimonies of their life-changing abilities, encouraging us to try them, but very little acknowledgement of their dark side. The subculture is very quick to brush away anything that goes against the narrative of the "mind-opening wonder drugs that big pharma doesn't want you to know about."
My experiences with psilocybin over a few months started with awe and wonder and spiritual awakening (or what seemed to be at the time), and ended with horrifying lasting harm. Insomnia, constant vivid nightmares, sleep paralysis, intrusive thoughts, anxiety, tics, and all kinds of weirdness at the periphery of conscious experience that I can't really explain.
It feels like I flashed my brain's firmware with no way to undo it. I took all the precautions I thought I was supposed to. I wish someone had warned me.