What is the Social Impact of Legalizing Marijuana?

Alcohol is legal and regulated. Its use is our nation’s No. 3 cause of preventable death, behind diet related illness. Alcohol use costs our country at least $185 billion annually β€” which is also roughly 10 times the amount of money our state and federal governments collect from today’s taxes on the substance (HHS)
Marijuana: According to the 2010 National Study on Drug Use and Health (NSDUH) β€’ Marijuana accounted for 4.5 million of the estimated 7.1 million Americans dependent on or abusing illicit drugs β€’ In 2009, approximately 18 percent of people aged 12 and older entering drug abuse treatment programs reported marijuana as their primary drug of abuse β€’ 61 percent of persons under 15 reported marijuana as their primary drug of abuse