I guess the amount of alchohol I ingest would be far worse than an occasional puff. Curious I guess, especially when the people I live with take so much of it themselves. I’ve probably inhaled enough through passive smoking as it is 
Never done dope or any illegal drugs. I’m pro legalisation but have no interest in ever trying them myself. I have on occasion drunk alchohol , only once to anything resembling excess. (I am of legal age and was when I drank) but no longer do so. I definitely do not smoke - cigarettes are disgusting.
I’m 34 and have never smoked anything, legal or illegal, or ingested any illegal drugs in any other format. When I was younger, I always figured I’d try pot sometime, but never bothered and eventually lost whatever shreds of interest I’d had to begin with.
Of course, one can hardly avoid the secondhand smoke at a Dead show, even the outdoor one I went to. That was when I discovered that I am really, really allergic to pot smoke. The I was later diagnosed with asthma, so now I stay away from any kind of smoke to whatever extent possible, although I do give in and expose myself to the secondhand stuff if a favorite band is playing somewhere where smoking is allowed.
I’ve been prescribed painkillers on several post-surgical occasions, but never take them for more than a couple of days before scaling back to ibuprofen or something. I just don’t like the feeling of not being in control of what my brain is doing. Of course, when I proke my leg in 6 places, IV morphine was a VERY good thing.
This is an excuse? No cite, but haven’t most recent surveys shown that teenagers are the most likely ones to start experimenting? Haven’t some teens claimed it’s easier for them to get pot than cigarettes?
That said, lump me in with the “I have enough trouble functioning clean” crowd. I never smoked anything in high school, but maybe that’s cause I was an outcast and not trying to fit in. Now, I barely even drink when I’m out, mostly because I’m deathly afraid of the consequences of exceeding my limits. That and most piloting-types have to be squeaky clean to pass the medical exams.
And yet another member of the “just say meh” crowd. Very moderate alchohol use, no tobacco, no drugs. Never even had any need for sincere pain medication.
I can’t claim any strong moral grounds for abstaining , mostly disinterest and partly my perception that the people I knew (in college) who were doing drugs were not at their most charming and brightest when under the influence. It’s also the case that, unless I want to dig ditches for a living, my brain is pretty much my meal ticket (well, that sounded appetizing) so why mess with it?
The plus side of the abstemious lifestyle is that when I need to drown my copious sorrows in alcohol, about 3/4 of a bottle of beer is enough to do the job.
Never done drugs. Never had any amount of alcohal. I have caffine on a regular basis. I’m not willing to give up Coffee or Coke (the drink;))
I’ve never used any illegal drugs, alcohol, or tobacco products of any kind. Nor have I experienced any mood altering from any prescription drugs. 28 years old.