No drug, not even alcohol, causes the fundamental ills of society. If we're looking for the source of our troubles, we shouldn't test people for drugs, we should test them for stupidity, ignorance, greed and love of power.
Imagine of all of life were determined by majority rule. Every meal would be a pizza. Every pair of pants, even those in a Brooks Brothers suit, would be stonewashed denim. Celebrity diet and exercise books would be the only thing on library shelves. And-since women are a majority of the population-we'd all be married to Mel Gibson.