I Smoke It and I Don't Give a Damn Who Knows It.
I've been smoking for close to 20 years and I've had cognitive tests run which have turned out fine, so there. I happen to be an avid supporter of medical marijuana as I have a few health conditions that only marijuana use has been able to help. It also happens that marijuana is the least harmful "drug" out there. I have been on a menagerie of man made, prescribed medications that are far more addictive and in the long run, harmful than marijuana. I do not buy into this BS of it being a "gateway" drug. I have tried other "drugs" and I never liked the affects of any of them. I believe we all have choices and my choice is marijuana.
If you have a problem with marijuana may I suggest you take some time and do some research on the long term health risks of alcohol or cigarettes or perhaps prescribed pain killers first, before you make any harsh judgments.