People can certainly become 'addicted' to cannabis as can chocolate, or shoplifting, or sex ..... in fact anything you enjoy can be 'addictive' to undisciplined or compulsive individual.

Taking sex addiction as an example, should we ban sex for everyone because some people become 'addicted'? Sex addicts are more at risk for STD's and even death. Sex while driving is more dangerous than smoking dope and driving.....so why are do we not enforce a prohibition on sex?

Just because some people like cannabis to the extent they feel they can't do without it (psychological addiction) does that mean this herb should be banned for well disciplined adults who can control their impulses?