I have not smoked put in over 10 years, however I do think that it should be legal. It's a stupid thing to do, it sucks the life out of you, you forget how to have fun without it, and it makes you think you're more inspired than you actually are... but it shouldn't be illegal. It should be taxed and regulated.
Marijuana smokers should be held under the same standards while as drinkers are when caught driving under the influence. AND... don't give me that BS about being a better driver while you're stoned, it simply doesn't fly. Stoners say that, because they're stoned. I've been stoned, probably a thousand times in my life, and I can tell you from personal experience that stoned driving is bad driving (especially the next morning when you wake up and realize that your car is parked 3 feet from the curb).
If our jails weren't clogged up with simple drug offenses, and the cops didn't have to waste time dealing with idiot stoners, it would be a better country. It would also be a safer country! The average stoner doesn't think about where his pot comes from, the deals and the dealers. There may have been someone killed for that Guatemalan Red Hair that you scored, but the stoner doesn't see that part of the deal. If light drugs were legalized, the price would go down, and there would be less crime, because most all crime stems from drug abuse.
Marijuana is very SOCIALLY addictive. You gain friends very quickly, and you bond with them very quickly too... but you'll lose them just as fast if you stop smoking pot. But just because something is stupid doesn't mean it should be outlawed.