This is an intelligent question why?
Of course alcohol has caused more deaths because it IS legal....and in what world does your imagination swim in thinking that when marijuana is legalized that the statistics won't eventually catch up or surpass?
Here’s a clue for ya...the most widely abused drugs are perscription drugs...
And anyone who wants to smoke pot...already is...
http://www.youtube.com/watch?v=m_-dtU_esJ8
William F Buckley & Charlie Rangel debate war on drugs circa ‘91
Buckley wipes the floor with Rangle....check it out...