I think hallucinogens may play a role in treating some conditions. That said, I believe they cross the line and should be very carefully controlled. So if LSD could cure cancer, sure, but if it might help treat anxiety, probably not. Actually, a popular TV show, Law and Order, recently highlighted ibogan as a treatment for addiction. It made it seem like it was a magical wonder drug that could with one hit permanently treat a serious addict. Felt a little inaccurate.