"I heard of cases where people don't seem to be able to close the doors to the spirit world of datura, months and years after the actual experience."
I have a lot of experience with scopolomine , i used it for about 4 years , and i have had the whole range of possible effects and had the big one , the bigger than the death dose , the one that you never come down from . The doors of perception , the doors to heaven and hell were opened and never closed again . I have no barriers between my consciousness and my sub conscious . It took me years to learn to live with it . Most people die or go insane . Thats why i say so vehemently DONT DO IT . It is not a recreational drug . And NOBODY is ready for it .