J J:
Datura: Many hallucinations, black-outs, again no spiritual effect.
Yeah, same. Datura (scopolomine?) is definitely a hallucinogen, but not a psychedelic / entheogen. Not even in the same league.
The only half-way interesting thing I ever saw on datura was a bunch of mechanical spiders/ insects drifting down from the roof and dissolving an inch or two above my upturned face. It was obvious they were visual hallucinations; no fear, no revulsion, no emotional content at all. And no meaning. No insight into the perceiving mind. Boring.
The contrast with LSD and psilocybin is immense. (Best not get me started on them...)