No, but productive members of society who are also drug users/abusers won't become criminals.
In case you didn't know, some extremely wealthy and productive people have ravenous appetites for drugs and alcohol. Many of them also die of it.
For some reason most people on these threads seem to focus on the street crack whore and totally forget about the Betty Fords, Brett Favres, and (gasp!) Rush Limbaughs.
Why keep addiction a crime?
I've been done with this argument for a week. Good luck with the legalization fantasy.