Deliriants
I can't for the life of me understand why people go into datura expecting they can get something recreational out of it.
The entire Solanaceae(nightshade) family has a long and documented history of being used as a method of exploring incredibly dark aspects of oneself.
To put this in a shamanic perspective, entheogens such as mushrooms and ayahuasca are a journey to the upperworld. Solacaneae plants like jimsonweed and belladonna are a journey to the underworld.