In the UK and western world(inc the US) the normal, (and some might say encouraged) use of a relaxant that being alcohol, has left many in our multicultural societies unable to engage.
For example. Having a beer down the pub to relax after a week of work is the norm, but for our Muslim brothers, they simply cannot, at least publicly. Cannabis there is the choice of relaxant, but it is illegal in many countries especially the UK
Were it to be legalized, that section of our society could partake in 'coffeehouses' as a way of relaxing after a long day or weeks work.
I think that would do far more beneficially for our communities, than a blanket ban.
Now im not going to wax lyrical about how safe a drug it is, and studies have shown that it can have detrimental effects, especially with long term chronic users, but that can also be said of alcohol,and with alcohol that drug itself has been linked to a majority of criminal actions from driving to assault to murder. So with that in mind, legalizing cannabis would on the whole do more good than.harm