To help purify the senses and interpret the higher self, one requires fresh clean air, water, forests, mountains and on occasions solitude. Practice Aikido rigorously while youthful; contemplate with inner vision on all your experience when aged.
Marijuana has its place with human lives, not with those intent on the way of Aiki.
For me I would say NO! .
Agreed. Very well said. The less of the stench of modern man that can be eliminated the better. Only Wilderness is purity, for it was made by the hand of the Creator and the Kami. The pollution, drugs, addiction to comfort, overuse of technology... all of this draws us away from the source.