Pros to marijuana legalization:
Lots of money from taxes
Less crime commited over drug deals
Safer Drugs
Cons to marijuana:
More, violent people. Think about it. 80% of people who talk about pot dont ACTUALLY do it, but if given the chance, they would. Pot makes people violent. Thus, more pot = more potheads = more violence and recklessness on the road.
I for one am for the legalization of pot, but it has a downside.