From a purely theoretical standpoint with no historical reference, I'd be fine with the "war on drugs". Unfortunately, we do have historical reference... and in roughly 50 years the "war on drugs" in America has only proven itself as a bottomless boondoggle. Anybody from casual weekend coke-bender dudebro to strung out junkie with no usable veins left in their body has always been able to get their fix without much effort. The whole thing is a joke that does nothing to reduce demand and makes an inconsequential impact on supply, not to metion tens of millions of junkies have been created thanks to the "legal" pills. It's actually one area where I'd be fine tearing the whole thing down, giving half the budget back to the taxpayers and the other half of the money for "fundin' 'dem programs!".
Call them whatever you will, joggers, white trash, nigs, hillbillies, nogs, blah blah blah... but handing some 17 year old Travariquis or Cletus a felony rap for slangin some rocks or cooking some meth probably isn't helping anybody in the grand scheme of things. If the demand is present for an easily manufactured product, that demand is going to be met, we have a century of modern data going back to the 18th amendment.
Now granted, if Travarquis or Cletus start gunning down their competition, that's another story... but shit like that is the natural progression when you force feed the creation of a black market. Spend that money hunting down child traffickers and those fucked up animal poachers that service weird asian men who want to shove a dehydrated tiger penis in their ass to cure their impotence.
tl;dr - legalize the drugs, prohibition of easily manufactured substances will always be folly.