If our response is causing more harm than the "crime" itself does it make sense to continue down that road just because we can't come up with anything better?
You can argue that treatment, etc, is a better response than criminalization. I agree. But that's a different argument. Arguing that drug use has no victims is an attack on the legitimacy of any response to drug use, and ignores the huge numbers of people hurt by other peoples' drug addictions.
