I'd recommend this documentary for anyone. Many of the issues hit hard, force you to think, and provide viewpoints you may never have thought of. With that said, it is quite biased.
The 'simulated future' is VERY bleak. The camera lighting and music set an incredibly depressing mood, which is extremely unfair to the argument. We are unevenly influenced by things such as music, mood, and visuals. Setting a negative tone overshadows all of the pro legalization arguments every expert brings sup.
Most of the interviews with real people bring up research and points that show HUGE benefits to society from legalization, but many of these are unfairly ignored because the mood is so damn depressing.
Also, the background story is irrelevant. "TWO PEOPLE DIED OF TAKING SEMI-LEGAL DRUGS IN THE FUTURE!!! SO HORRIBLE, BAN ALL DRUGS!!" The plot conveniently ignores the argument that thousands of people die today from unmonitored, and often laced, illegal drugs.
Final thoughts: Watch it, and take notes on the interviews. It brings up very many good points. Watch the 'simulation' for entertainment, but don't take it seriously. It contributes nothing to this piece.