Among the speculations is always that DMT somehow performs a part in dreaming or spiritual experiences, even though why we'd be equipped with such a chemical isn’t clear. Perhaps the accurate “hallucinogen” receptor has now been found and is simply mislabeled as being one of the lots of 5-HT receptors. https://reidhkbui.jts-blog.com/25916921/the-greatest-guide-to-dmt