Define "drug abuse related costs." I guarantee that "drug abuse related costs" are not limited to treatment centers. In fact, I would bet my bottom dollar that this figure includes things that are exacerbated by the backwards drug war you advocate - increased health costs because of bad drug education, increased health costs because of unsafe drug use, etc. If, for example, we put as much effort into needle exchanges as busting addicts, I'd bet we would see a significant decrease in health complications and therefore costs.<quoted text>
In 2007 the annual cost of incarceration was 74 billion...In 2009 the annual cost of government drug abuse related costs was $468 billion....do the math.
And yes, you can say that it's their fault for using in the first place and that it's not our responsibility to do these things, but that's an unrealistic attitude that ignores pretty much everything we know about drugs.
Just a quick list of some of the things I am assuming went into your "Drug cost" figure.
lost time off work
All of which would go away if we regulated the drug trade - this would destroy the black market in one fell swoop. Or do we still have speakeasys? Do people still die from bad batches of alcohol? Learn from history. Prohibition does not work.