I think what OP is saying is that if every single person in a given society was to take psilocybin/LSD (or psychedelics in general) then that society would not look like society as it does 'traditionally'. The other posters to this comment thread ask how "hallucinating" would do this, but they need to realize that it is not visions or hallucinations that is the variable of change during episodes of influence under these drugs, but it is the change in thinking that incorporates the qualities of goodness, unity, beauty, hope, acceptance (I think all of these words can be compressed into the word 'love') that would be detrimental to the status quo if everyone were to feel this way.