I'm confused by your use of the word 'decriminalized' in the same breath as 'legalized.' I think you meant to say "It should be criminalized because it's unproductive."San Jose California:
It should be decriminalized because it's unproductive. Also because 99% of the people that use it, use it just to get high and don't need it for any medical use. So there you go, 99% of the people that take it, take it just to get high, and become more unproductive because of it. So why should it be legalized with those two factors in place?
Rational criminal prohibition of behavior needs moral turpitude. Smoking, baking, or vaporizing marijuana doesn't have moral turpitude. Weed, unlike beer, doesn't cause bar fights. Weed, unlike beer, doesn't cause reckless driving. Weed, unlike alcohol or tobacco, doesn't kill people. Nobody has ever robbed a bank with a need for their next fix of Mary Jane. The only time that laws should be concerned is when a behavior harms other people, because your personal disagreement with a behavior isn't rational justification in itself to criminalize behavior. Society is not your employer who sets work productivity standards. Society isn't your nanny to dictate what foods to eat for breakfast, how to brush your teeth, how to organize your laundry, and what's the best underwear garment to wear. We (at least I) don't live in China. People have the exclusive providence to will their want with their bodies as long as they don't harm other people. Marijuana is not a drug of physical addiction, the amount of 'addiction' is comparable to sugar or caffeine; the only people who go through 'marijuana treatment' are people who were arrested for possession and had the Hobson's choice between treatment or jail.
And yes, I'm stoned right now. I know you couldn't tell because my vocabulary, spelling, grammar, and intelligent reasoning abilities remain sharp. I have proven to you how smart things can be spoken while high.
Myth: Marijuana Causes an Amotivational Syndrome. Marijuana makes users passive, apathetic, and uninterested in the future. Students who use marijuana become underachievers and workers who use marijuana become unproductive.
Fact: For twenty-five years, researchers have searched for a marijuana-induced amotivational syndrome and have failed to find it. People who are intoxicated constantly, regardless of the drug, are unlikely to be productive members of society. There is nothing about marijuana specifically that causes people to lose their drive and ambition. In laboratory studies, subjects given high doses of marijuana for several days or even several weeks exhibit no decrease in work motivation or productivity. Among working adults, marijuana users tend to earn higher wages than non-users. College students who use marijuana have the same grades as nonusers. Among high school students, heavy use is associated with school failure, but school failure usually comes first.
Himmelstein, J.L. The Strange Career of Marihuana: Politics and Ideology of Drug Control in America. Westport, CT: Greenwood Press, 1983.
Mellinger, G.D. et al. “Drug Use, Academic Performance, and Career Indecision: Longitudinal Data in Search of a Model.” Longitudinal Research on Drug Use: Empirical Findings and Methodological Issues. Ed. D.B. Kandel. Washington, DC: American Psychological Association, 1978. 157-177.
Pope, H.G. et al., “Drug Use and Life Style Among College Undergraduates in 1989: A Comparison With 1969 and 1978,” American Journal of Psychiatry 147 (1990): 998-1001.