For the same reason there is Alchemy. The same reason we have Gods. They raise us above our attachments and remove our emotional bounds to show a different point of view. They teach of higher worlds, and give us a glimpse of our own from a higher point of veiw. They cause us to understand our motivations and to circumscribe our desires. They motivate us to make holy (great) monuments, inspire teachings of greatness, and have led to our present development. The question is not why do drugs, but why refuse?
