That being said, that Aikido "journey" will involved practicing with another person. At that point in time, NO MIND ALTERING SUBSTANCES should be used by any one party, due to the REAL risks that are entailed by doing so.
Let's be clear about what we're talking about. The question was about smoking dope while "on an Aikido journey". That's a somewhat ambiguous phrase, but I think a fair interpretation might be "while living a life in which one studies Aikido
." Everyone, including yourself, is insisting on answering a question that has not been asked, which is, "Should you get high and then get on the mat?" The result has been a chorus of "hell no", which I don't disagree with, but it's really got nothing to do with the question that was asked.