The most damaging thing about drugs is the damage our country does to people's lives by locking them up, prosecuting them, drug raids, creating a culture just like the 20's that creates a whole criminal culture and the law enforcement agencies and a prison system addicted to prohibition.
Who cares if its not harmless? Lets look at all the things people do and truly ask whether they're "harmless". The essence of a free society is the right to make poor choices, too, as long as you're not directly injuring or harming others.
We need to stop the war on our own citizens - i.e. the "drug war" - and start to manage it as a public health issue.
Go to mpp.org or drcnet.org and see the harm that the "drug war" causes. "
The Purple Brain: America's New Reefer Madness
Here is a quote:
"Unlike alcohol -- or even aspirin, -- today's marijuana still poses no risk of fatal overdose, regardless of the strength of its primary psychoactive ingredient, THC. Moreover, cannabis consumers readily distinguish between low and high potency marijuana and moderate their use accordingly.
Finally, despite claims that marijuana alters the brain, it is important to note that THC -- regardless of its potency -- is surprisingly non-toxic to the adult as well as the teenage brain. Recently scientists at the Nathan S. Kline Institute for Psychiatric Research reported that they could find "no ... evidence of cerebral atrophy or loss of white matter integrity" attributable to cannabis use in the brains of frequent adolescent marijuana users (compared to non-using controls) after performing MRI scans and other advanced imaging technology. Separate studies assessing the cognitive skills of long-term marijuana smokers have also reported no demonstrable deficits. "
link:
http://www.alternet.org/story/54977/You might also be interested in some facts that disagree with NIDA - after all, they have an agenda - continue funding the drug war.
Marijuana Myths, Marijuana Facts
Zimmer, Lynn and Morgan, John. Marijuana Myths, Marijuana Facts: A Review Of The Scientific Evidence. New York: The Drug Policy Alliance. 1997, 241 pages.
link:
http://www.drugpolicy.org/library/bookstore/mmmf.cfm