As for who is “less useful,” the mentally impaired are.
To pretend that most regular pot users do not get affected mentally is simply to deny reality. We all have probably known regular pot smokers. They are, as a general group, not doing well mentally.
Perhaps you know an exception or two. I can believe that. However, the vast majority I know/have known have been spacy, dumbed down, or paranoid. Some seriously paranoid.
A person who zones out on a tv show can still kick it into gear. A person who smokes out every day, can’t.
So all your arguments come down to anecdotal evidence? If that were useful we should go back to alcohol prohibition, at least for hard liquor. Most of those users are mentally impaired, violent, and obnoxious. At least the majority I’ve known.
Given the chance I guess you won't be voting for Sarah Palin then? She grew up in the grow capital of Alaska and probably didn't smoke just a little. I am a little disappointed in famous potheads like Sarah and Arnold when they cave in to conservatives. They had no issue with pot until they ran for office.