If they did legalize it, what would happen to the thousands sitting in jail / probation for pot offenses. Oh were sry, it's ok now?
Is that reason enough to keep them there? Isn't it better to do the right* thing at some point, than do the wrong thing forever? Should an innocent man be sentenced to death, if at some point before his extinction from this earth, we find out the truth?
Asking for forgiveness, and admitting the wrong had been done, is and will always be, the first step towards rectifying injustice.
* Marijuana has never, from its physical effects, killed any one. It is one of the safest substances for humans to ingest on the planet. You would die from drinking too much water before you could kill yourself from a smoking/eating pot (long term smoking effects not included).
For those who insist on the "moral" cough bullshit cough perspective: People do not become menaces, belligerent, and or violent towards their families smoking weed. People don't black out and wake up wondering what happened. For alcohol, the same cannot be said. Yet, marijuana is immoral? Let me hopefully be the last to say, with a smile, fuck you and fuck that :)
Furthermore, as is the case, well in my opinion, with all drugs they are at most: medical problems, not criminal. The criminal system is anti-rehabilitation; and as a result; ensures the propagation of the problem and not the solution.