Drugs are not the problem. It's the stupid fucks that take them and use drugs as an excuse to act like fucking idiots that cause the problems.
That and ignorant people that say "drugs are the problem" without saying WHAT drugs they are talking about, or having any real knowledge about the effects of any/all drugs.
If you want to get technical, the problem is addiction and overconsumption. Anything in moderation is probably "okay." That and people aren't responsible and don't know their own limit. Like I said, it's the PEOPLE not the substance they take.
Caffeine is the NUMBER ONE DRUG ADDICTION IN THE US. Yes, it's a drug, just like alcohol and nicotine. But the average asshole American listens to propaganda from the Government about drugs and says, "these legal drugs are okay, oxy contin is great, but FUCK MARIJUANA!"
Those people should all be shot in the fucking head.