Marijuana has been legal now in some parts of the United States for around two decades. It all began with the legalization of a reasonably liberal medical marijuana program in California back in 1996 and progressed into a scene where adult residents in 10 states now have the freedom to purchase cannabis in the same way they might beer. It’s a concept that is preventing thousands of people from going to jail every year as a result of personal pot possession. It also boosts local and state economies, creates thousands of new jobs and helps put the food on the tables of around 211,000 families nationwide. But are there any downsides to marijuana legalization that should be considered?