I think that's a good subject that might need some revisiting from scripture now that pot is legal in some areas. (Maybe in a new thread?) The standard Christian fallback on prohibiting pot has always been that you are breaking the law when you buy or use it. The problem is that lacking specific scripture, it seems rather hypocritical for a Christian to tell the pot smoker he is sinning while the Christian is flying high on his 10th cup of coffee, bottle of Mountain Dew, or smoking his cigarettes. I don't smoke pot myself, but I've always wondered how we can condemn it from scripture. With exception of the legality issue, all of the scripture I've ever seen to condemn pot can be used equally well to condemn moderate and legal use of caffeine, nicotine, alcohol, and many other things many of us use without a second thought.
Disclaimer: I'm not intending to violate the TOS, I'm only speaking of the use of pot in areas where it is legal to do so and am only asking us to reconsider what scriptures apply, not encouraging anyone to start using it.
When I smoked pot, it helped me to escape reality, it made me an introvert, and destroyed self worth.