No, there's a reason why weed is illegal. It's because we believe in a society people are better off being sober than being drunk, buzzed, foggy-headed, etc.
Second, you really don't get rid of the problems associated with alcohol or drugs. You merely transfer them.
And we see this with alcohol. Okay, maybe you got rid of incarcerating bootleggers, shot house operators and crimes associated with the black market. But those didn't disappear. They were merely transferred. So instead of shoot outs between rival groups you get people being killed by drunk drivers. Instead of incarceration in prison for running a bootleg operation, you get those who have to check into rehab facilities because of their problems with alcohol. And on and on and on.
And guess what? It will be the same with the legalization of marijuana. Problems and negative consequences associated with drug use (whether cocaine or marijuana) will merely be transferred. You'll still have the same problems. They'll just be legal.
Except there isn't anything to "pass on" with Marijuana. Which is why anyone who's ever used it thinks it's ridiculous. Rehab maybe, but those are people that would have find anything to abuse.
There will never be a time, except maybe in a millenia when booster shots are given to children to eliminate the basic instincts of human psyche and the psychological issues and abuse, where there are not reasons why people seek substances. It's not going to happen. So, once you ascertain a level of common sense about it, as they did with alcohol (which is a far more societal danger than Marijuana), efforts should be concentrated intelligently.
Alcohol is a far more dangerous drug than Marijuana. Look at Colorado. Recreational marijuana is fine. Alcohol causes complete impaired-ness, you can't even compare the two as far as societal impact on legalization.
Instead, we're giving kids criminal records, locking people up, and giving yet another reason for stupid people to cast judgment and justify their self righteous indignation, for a substance that is less harmful to your body THAN SUGAR. Tax breaks to companies causing an obesity epidemic with high fructose corn syrup mass produced celebrated brands.
Plenty of people cope different ways, if the worst a guy does is grow a small plant in his house and use it, by all means that's no one's damn business but his own. Hell, with the way people are treated now by the medical and pharmaceutical industry, getting them hook on opiates and cutting them off and labeling them "addicts", passing out dangerous barbiturates like candy, SSRI being the first thing a doc puts you on when you have anxiety/depression.
Marijuana should be encouraged as an alternative. It's far less dangerous than what any pharmaceutical company will gladly hand you in an appointment, and has been effective as evidenced by the vast community using it, as an alternative for pain management, anxiety, depression, and various other unfortunate diseases.
Not to mention, as a businessman, it's a sad sack when I see all these tax dollars going to waste arresting kids with a damn dime bag of weed, when states could be creating hundreds of thousands of jobs. The war against Marijuana is the biggest waste of tax dollars I've ever seen, absolutely ridiculous. Might as well arrest all the stupid parents that feed their fatass kids McDonalds every day if we really want to arrest people harmful to society.