There is an account of the "why" on LSD in the Bent Corydon book, by Hanna Eltringham(?) about how the HubTurd decided that LSD was the reason that his orders were not being duplicated. In fact, that psychotic old fart couldn't remember what orders he gave or didn't give.
Meanwhile ... I tried LSD twice, and found it to be the most miserable drug around, period. It is one of the few drugs where the downside is do terrible that it outweighs any of the good feelings of the high, which, to be honest, were not all that good anyways. That crap was so miserable that I actually gave away the remainder of my stash ... those two time was simply enough, I have never been even remotely interested in trying the stuff again. Booze, weed, toot, smack, and tweak are mellow by comparison.
I agree. Based on my experience with it, I would say LSD, if it's a "good trip," is about 1/3 high, 1/3 waiting to go up and then coming down and about 1/3 depression from coming down. If it's a "bad trip," which is what happened to me the second time I took it, then there is no up side to it (no pun intended but you can take it that way if you want.) From what I have read and seen about it, taking LSD can be extremely risky.
As for Hubbard, as "scientologists" go he was probably one of the worst with Davey being the other one.