How dare governments make dimethyltryptamine illegal! How is this ethical?

How is a naturally occurring substance (your pineal gland makes DMT every night when you sleep, it is theorized that it's what causes dreams), which just happens to be the most potent psychedelic in the world, just brushed off and made illegal,lumping it into the infamous "drugs" category with heroine and cocaine? South American indigenous people have been using teas("Ayahuasca") brewed from DMT containing plants for ages as a spiritual and religious ritual, and tourists from all over the world go to South Americans countries as "Ayahuasca tourists" to experience spiritual enlightenment and emotional healing which comes with the Ayahuasca trip. Will dreaming eventually be outlawed as well?