Yes, drugs are bad, but this does not mean marijuana. Yes marijuana is a drug, but it is one of the more harmless drug out there.
http://www.marijuana.org/DalesReport.html#foot1Marijuana is widely used to treat nausea and appetite lossassociated with AIDS.......There is much evidence, largely anecdotal, that marijuana is useful as an anti-convulsant for spinal injuries, multiple sclerosis, epilepsy, and other diseases.......Cannabidiol, a constituent of natural marijuana not found in Marinol, appears to have distinctive therapeutic value as an anti-convulsant and hypnotic.......Many patients report using marijuana as a substitute for moreaddictive and harmful psychoactive drugs, including prescription painkillers, opiates, and alcoholMarijuana and Marinol have also beenfound useful as a treatment for depression and mood disorders in Alzheimer's and other patients