yep. We have some amazing art, music, literature etc because of mind altering substances.
There is a documentary about mind altering drugs and that the big problem with them being considered legitimate for scientific research came from the religious groups who felt that the only appropriate or correct way to reach such heights is through the worship of god and that any other manner was the devils way.
Ruined the scientific communities funding for studying the effects (positive and negative) of LSD, MDMA and magic mushrooms. It's been a slow start, but science is able to get funding again for their research and are learning some amazing things about the brain because of it.