If I'm mistaken, legalizing it would allow users to acquire large quantities of drug while decriminalizing would reduce the penalty involved in possession of weed. For example, right now, if I get caught with...2 gram, I get arrested. If it gets decriminalized, I won't get arrested but I'll be arrested with 50 ounce of weed which would be nice to have
Booze is legal but it isn't legal to have a huge freaking quantity of it, enough to drink yourself to death.