Uh becuz it being totally hardcore illegal just makes more unessessary work for the government. Drugs are going to be there whether the punishment is going to jail or not so its just easier logic. their keeping the idea that marjuana is illegal but aren't going out of hand with it. That's just in my opinion
Alcohol is legal with an age limit, and clearly does more damage among people than marijuana.
So I agree that it should be decriminalized.
The only reason they can't make marijuana legal, is because the government has no control over it. They can't tax it, or sell it when no one else can. People can grow and sell it themselves, cutting the government out as a middleman, therefore pissing the government off because the dealer/grower is making money, and the government isn't.
The government makes money off of the money we make at our jobs(taxes), and that's why they will never legalize it.