Sirenomelia:
Your entire argument is predicated on the legality of marijuana use. If (and by public opinion, it's is more when marijuana becomes legal, the stigma about usage is alleviated and the loss of license and/or professional career will become greatly diminished. If you still think physicians should be abstinent from marijuana use, you should also be advocating random breathalyzers during rounds or routine BAC checks.
For the most part, people get into medical school and become physicians because academically and socially, they are exemplary individuals. In order to become a physician you have to demonstrate some responsibility and commitment and most medical student exhibit that. Obviously there will always be a few who slip through the cracks, but you seem to be obsessed with persecuting these few individuals and tarnishing anyone in medicine that recreationally uses a fairly safe and short-lasting drug. Your evidence is purely anecdotal and your argument is based on legality and not morality. If you hold that mindset, I wouldn't have a hard time believing that you would have participated in Nazi Germany under the guise that you were simply following the law and order of the time and only doing what "was required"
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Wait, did I just compare you to a Nazi..... Obviously that is ludicrous, spiteful, ridiculous, and stupid but the sentiments that you cast over marijuana users are of that extreme and have no basis in evidence or any sense for that matter. It is insulting. You say that private use is a factor in workplace activity, but if marijuana becomes legal, smoking marijuana will not shed any negative light on the institution you represent (unless it is full of close-minded individuals like yourself), it provides a relaxing experience for the stresses of a professional in the medical world, and, if done responsibly, is as harmless as some of the top physicians in this country who go to a bar on the weekends or drink beer while watching the game on Sundays.
Again, morality does not equal legality and for someone who has gone through so much education,you can do your homework and agree that marijuana is the least harmful of any drug (including alcohol) in terms of addictiveness (none), impairment (far less than alcohol), and inappropriate behavior (I have never heard of anyone that smokes that has become violent, agitated, or in any way, reckless).