Earth is a drug-lab, spiritual beings are addicted to having a chemically stimulated experience on human neuro-chemistry. Serotonin, norepinephrine, dopamine, dimethyltryptamine, melatonin, adrenaline, endorphins, tryptophan, oxytocin,
If a person takes a drug which alters this chemistry, they have a vastly different experience than normal waking reality.
Get it? The human experience is a chemical-based reality experience.