Some people shouldn't use drugs period, they are just natural assholes and douche bags.
But you probably fail to see the majority of what a true pot head is. Also keep in mind weed smoking for the majority is a culture, something you'd have to be apart of to understand. Think about it, legalize marijuana, we would get out of debt. Not only that by just legalizing it the government would save enough money in a year to give everyone free health care. Also then it would be more regulated, and less available for youngsters, I mean face it drug dealers don't ID. Also by legalizing, it gets rid of that cool factor, because it wouldn't be illegal just restricted. Not to mention the sensless violence over drug territories, gangs, etc, all because they really couldn't profit over marijuana. You don't see drug dealers selling cigarettes(for the most part)...
So don't let a small number of douche bags ruin your prospective on something that is more then you can understand simply because your a 3rd person in the culture.