Haven't heard much about the legal programs for junkies. I know the Swiss have started a program and most of the stuff I've read about the one in London are positive.
I'm not in favour of legalizing all drugs. Some are just far too dangerous for anyone. Today it's "crack", back in my day in was "angel dust", no thanks! But......a pint, a puff and a pick-me-up now and then makes the world a much nicer place!