Where’s the demand for all that LSD. I can’t imagine more than 30 million people ever doing it and probably less than 2 million habitual users in the US.
The production of LSD was highly concentrated, the DEA claimed that after Pickford's arrest, availability dropped by 99.5%, it looks quite a while to recover. His supply basically was the entirety of demand at the time.
In Australia during university around the second the summer of love period we ended up doing acid at least once a week (mostly weekends) for near two years.
Probably about half time in the city at clubs and parties, and half time out in the forests and remote beaches.
Strawberry double dips were prevalent, a few other designs, microdots etc.
I'm pretty sure it gave me a perspective still today, that I would not otherwise have.
I don't think it caused any "damage". I still graduated with one of the hardest 4 year degrees and went on to use the degree in a career. I don't have any regrets about it all and the events that unfolded.
There were, however, many, many notable incidents and events, most of them more than little bit funny, even today.
I don't really remember expressly how, why it ended, it was like organic decay. I think it just ran it's course with availability of LSD, us having the time and places to do it, and eventually I think life just took over.
But, definitely, there were some regular repeat customers.