I keep wondering if some day, some one will come up with an argument for legalizing drugs that makes sense, but to no avail... probably because the folks who use drugs and want them legalized are fried and don't even realize it. So... we keep getting the basics:
1. Cigarettes and alcohol are worse than grass, and they're legal! Okay, so your living room is on fire... do you rush off and set your bedroom on fire as well? Cigarettes and alcohol are worse than grass, but that doesn't mean making another problem substance legal is going to make the situation any better. We need less access to fewer drugs, not the opposite. We've made great strides in reducing cigarette consumption, and hard liquor is on a downturn also, so where's the sense in creating a new problem?
2. Resources spent criminalizing marijuana are wasted because I can get it anywhere/anytime and everyone's smoking it! As has been well pointed out, you can't buy marijuana anywhere/anytime, and not everyone is smoking it. The reason that these are the cases is because of the resources spent in criminalizing it, so obviously these resources are not being wasted.
3. I perform just as well with a buzz than I do without. My question is how do you know? The minute you start ingesting chemicals into your body, you begin damaging brain cells, your liver, lungs, heart, etc. This damage can be minimized by stopping smoking, drinking, etc., but it cannot be repaired. So once you've begun to permanently damage your body you can never perform as well as you did before you caused the damage... so you really have no idea of what performance level you would be at it you hadn't started that junk in the first place. All that you know is how to make the best of what you've got left.
I always will remember a guy I went through a drug and alcohol abuse class with on the USS Saratoga, who bragged that despite drinking a case of Bud and a half of bottle of Jack Daniels a day, he could still perform just as well drunk as sober. When we added up his alcohol intake for each day we found that he was never really sober! He really had no idea of what he could do sober anymore.
4. Plenty of people are users and high on the job and you don't know it. Oh yeah... we know it. Those of us who have never smoked, snorted, toked, drank, or shot up can spot those of you who do pretty easily. At one time they could to, but now they start to project themselves onto others, and think that their limitations are the same for everyone. Sorry guys, but you stick out like a sore thumb.