Quasi-scriptural arguments don't come flimsier than this. If you want to force the issue, you lose big time. According to the Bible, Jesus drank wine. Paul drank wine. Neither smoked a joint.
Next!
Besides, you will find few people who call themselves Christians that "condemn all consumption of alcohol." Don't be silly.
If you will read my ENTIRE message, I said, and still say, that ABUSE is the problem. Using too much of, or using anything when unneeded is the problem. Especially, excessive use of force by authorities.
I am not sure that "pot smoking" is a cure for back pain, although it has been reported helpful with the nausea caused by the legal POISONS used to treat cancers. Would you like to bet on my reception if I were to propose massicely dosing you with a deadly chemical or radiation on the theory that it will almost kill you but will kill your disease ? Yet put MD by my name and many will act as though infallibility has been conferred.
Lastly, I note the thundering silence regarding the idea of expanding the many mandatory drug tests to our "masters"; for such they must be in order to be exempt from the very rules and laws they deamnd we observe.