I view the usage of drugs as an aid to unseating the consciousness mind and moving it to somewhere its not so used to, giving rise to new experiences and ways of thinking. Yaki indians use peyote to experince a oness with nature, I use it to aid meditation. Without drugs it would be much harder to view the wiring beneath the circuit board!
They used the natural drug in a small amout once or twice a year, not everyday, to have a certain ritual performed.