I think the people who hold it together who aren't giant stoners still keep it somewhat in the closet, since they do have professional lives they want to maintain and aren't sure how it will go over.
Moderation is the key. But the problem with recreational marijuana is that it has become a cult to some degree. People see it as the be-all-end-all to every problem in life. I know people that can’t hook up a subject-verb-object to complete a proper sentence, but they can tell you every chemical compound regarding marijuana. It’s become an obsession.
Another thing for the marijuana is better than booze crowd: Do you think inhaling hot ash into your lungs and capillaries is healthy?
You’re right, many people only use occasionally. I smoked some many years ago after a tooth extraction because I got up with a dry socket and was in horrible pain.
Even when you only use it once every few years it isn’t hard to find. Just ask a couple Vietnam vets and you can usually find someone willing to help.