I was listening to my Cypress Hill's Black Sunday album when I saw this thread and it has this interesting quote on its backcover:

"100,000 Americans die from diseases related to cigarette smoking each year.
More than 150,000 Americans die of alcohol abuse each year.
But in 10,000 years of usage, no one has ever died from marijuana."

I think this is the bottomline, no one dies from marijuana. it shouldn't be illegal because SOME of its users do stupid things when they're high. of course, if you smoke too much, it will be bad, just like too much chocolate would be bad too.