More people will use cannabis if legalized  If cannabis is legalized, it will become socially acceptable and more people will smoke it. It will also become more readily available. In the Netherlands, cannabis usage went up after it was legalized1. With more people smoking, more people will experience the adverse physical and mental health effects - more people will be harmed. Furthermore, as Dr. David Murray has noted, 'marijuana use is the leading cause of treatment need for those abusing or dependent on illegal drugs'2; therefore not only will more people use cannabis, more of them will be addicted.  1 Mackenzie, D. (1998, February 21). New Scientists Marijuana Special Report. Retrieved July 20, 2011, from UKCIA: 2 Dubner, Stephen J., 'On the Legalization - or not - of Marijuana', Freakonomics, 30 October 2007