My friend's mental health was seriously and irreversibly damaged by a one time adventure with psychedelics... Apparenty, non-negligible (over 1%?) portion of the population reacts this way.
Lesson for everybody: Don't eat nuts!
[1] http://www.mountsinai.org/about-us/newsroom/press-releases/r...
Your argument against psychedelics is not persuasive in the manner presented.