I personally think the War on Drugs has actually caused people to use newer drugs, like ecstasy and meth, because these are easier to make/conceal in your home or locally. They don't need to be smuggled in or transported, and if they are, can be hidden much easier than, say, marijuana bales. It is also responsible for the socially acceptable practice in our culture, of running to a doctor for a 'magic pill' to keep you happy, content... high! The drug companies are like... Oh yeah, we can mix you up some chemicals that will make you feel stoned as a rat, BETTER than pot! And by going to the doctor and asking him for it, you aren't doing anything wrong, no law is broken, you aren't a drug abuser, you aren't an addict, you're not involved in this War on Drugs! Look at you... attending your daughter's 'Just Say No' rally, high as a fucking kite!
See.... here is the problem with the War on Drugs... it's similar to what I have said about Liberal idealism, it doesn't take into account, the consequences... and there are ALWAYS consequences to something like this. The results can be catastrophic... Look back to Prohibition for examples. The error is, not addressing the fundamental problem, and attempting to apply an artificial 'fix' for the symptoms. It makes us feel like we are doing something, but in actuality, we are often causing more harm than good.
We need to be able to honestly discuss what makes individuals want to escape life, or enhance a euphoric feeling to function in life? Why do they seek this high? Solve that mystery, and you solve the drug problem.