Humans throughout 10,000 years of cannabis and other substances,(herbs , flowers extracts), have used these things for food, medicine, spirituality, and euphoric effects. I feel that it is natural to humanity to explore these things. We may not lead tribal life as things are now; but social, and or, personal use of cannabis is spiritual even in ways we do not notice on a daily basis. There is the bonding connections that are pleasing in the drug culture that many never mention. I guess it is the tribal nature idea. Those who our outside the culture will never experience or understand.
There is always a use or abuse issue with self control of the individual; but I have a problem using "morality" as an issue here at all. I think it should be a requirement to have experienced something before making moral judgement; even then, with caution.
I don't want to go into the list of medicinal uses proven for medicinal use of cannabis. It is still not as important as it is an issue of "freedom and cause of Liberty". Social Conservatism scares me as much as Neocon mentality. There seems to be that slant in your post. Many things could be counter-productive; but are sure subjective.