I have never dabbled with drugs, I used to smoke tobacco (disgusting habit) and quit 10 years ago, I dont drink alcohol at all, but I dont think that makes me a total novice on the subject, If I see something that doesnt look good I am not going to try it.
At my daughters school there are a lot of parents who take all manner of drugs, some are okay some are really awful and are very abusive to their kids, I think addiction is a variable thing, some people get addicted easy and some dont, therefore I would prefer to steer clear of drugs.
that said people who dont take drugs or drink or smoke actually do have fun!, we can enjoy ourselves like the next person. I prefer to have my faculties around me as I am a parent and its my responsibility. Even when they have gone to bed in the evening you can never tell what kind of evening you will have, sometimes they might wake up at a strange hour and be getting sick, and 2 of my kids need close supervision.
I dont agree with using drugs (however harmless) but that is based on seeing constant drug use in the area I live, the people dont seem happy, the kids are definatly affected and on the whole Its not a good advert, especially in parents.