Let's look at what happens after it's legalized. I was watching a documentary about how legalization has changed anything in California. They talked to both a sheriff's department, and a legal grower. The Sheriff explained that number of illegal growers has actually increased in his jurisdiction. He had to have a special warehouse built just to house everything his department had confiscated from illegal growers. The reason for this was that the Mexican cartels had created more growing operations since legalization. If you think about it, this makes sense. Alcohol is legal yet there are still illegal moonshiners in operation. Why? It's all so they don't have to pay taxes, fees, buy licenses, and whatever else the government wants to charge for. Also because the plant requires anywhere from 3 to 5 gallons a day, it's caused large areas of erosion in the national parks in California. The legal grower they talked to insisted that they could only interview him without revealing the location of his operation. Again, why? Because human beings don't want to pay for anything and he keeps getting his plants stolen.
Even when it becomes illegal, it'll still be a drug which places it under the control of the FDA. You're not going to be able to just toss a couple plants in your backyard. If you want to grow it, then the government will put you through your paces. First you'll probably have to go through a background check which you'll have to pay for because the government doesn't pay for anything, and I guarantee that just one little wrong thing in your past will cause it to be denied. If you pass the check, then you'll have to pay a fee just to apply for a license to grow (which I guarantee will be in the thousands of dollars). Of course you'll have to pay another fee to get your license once they've allowed it. Not to mention the yearly taxes and fees you'll pay in city, county, state, and federal. The government will make a killing off the legalization of pot.
Let me make myself clear about this. I really couldn't care less about this. I don't know what the solution is and really don't care if there is ever a solution found. It's just not that important to me. I'm just against handing millions, maybe billions, of dollars over to the government that they'll blow on something stupid like the 12 million dollars in financial aid we send to China every year (this is in addition to the loans we're paying off to China).