There do exist reports of children dying after ingesting psilocybin mushrooms but this may be a function of the amount ingested.
I think the culture one is nurtured in is very important when contemplating using psychedelics as a youngster.For example, the experience of a child in an indiginous setting would fare much better as the 'weird shit' they see is understood by their peers including adults, and the conclusions reached gel with their worldview.
For children in the Western/modern world, I think it would be more likely to be potentially disturbing-unless the child is at the age where wonderment exceeds inquisitiveness and a questioning attitude.
IMO, particularly in the Western setting, the partaker needs to be of a sufficiently mature outlook, and this doesnt necessarily mean the arbitrary age of 18.However, its around this age where ones key neural pathways do become established but not necessarily rigidly fixed.
These compounds will always be accessible to those who really want them, and I think they represent more than a crafty cigarette in the garage/the woods.Again, patience is most rewarding when dealing with compounds such as these.
I am paranoid of my brain. It thinks all the time, even when I'm asleep. My thoughts assail me. Murderous lechers they are. Thought is the assassin of thought. Like a man stabbing himself with one hand while the other hand tries to stop the blade. Like an explosion that destroys the detonator. I am paranoid of my brain. It makes me unsettled and ill at ease. Makes me chase my tail, freezes my eyes and shuts me down. Watches me. Eats my head. It destroys me.