The justification for my straight edge position was simply "reality is sufficient", I only ever heard of James Randi espousing something similar. I didn't like the idea of having my perception of reality altered, I also feared, given my anger issues, that I might do something bad under the influences of substances, on the latter reasoning, it would be understandable to question trusting someone that doesn't trust themselves under the influence, which I what I assume their assumption is.
Yeah, and honestly, it would be weird to be in a setting of 8 people, 7 drinking and you decline, this makes you the clearest mind for the night. If the guy declining a drink looked and acted even slightly weird, I'm declining too. So with a drink, it's a fukking drink, you have to drink a lot to actually get drunk in most cases, this just reveals how much people actually drink when they get foolish, smoking, yeah, I'm not doing that but the people I typically hang around would be opting for edibles over smoking, so not just being conscious about lung health, but also wanting to deal with professional services with actual labs.