Acid is a very strange drug, and widespread use is certainly a bad idea. It’s not something to do for “fun”. Most people cannot deal with what is essentially a chemically induced psychotic episode. (that could easily go the wrong way - the “bad trip”) I could not imagine anyone being addicted to LSD.
I guess I was lucky. We had a group who would get together most every Sunday for a summer and trip. It was mostly just kinda heightened senses, loss of time and an appreciation of life. We actually had a blast. Luckily nothing bad every happened.
Then, the guy who was making it got busted and that was that.
Tried mushroom tea a few times. Similar, but different.
The other experiment that I remember the book talking about was psychiatrists giving the drug one time to men about 50 years old. Within a couple of years, more than half of them had completely changed their lives, starting new careers or making other big changes.