One could argue that since the brain *evolved* with receptors to the chemicals in cannibus, and that there is a subsequent joyful response to filling said chemical receptors with the appropriate chemical - that these are hardly dangerous chemicals, but are in fact evolutionarily evolved pleasure centers.
Just like fast cars, alcohol, sky diving, mountain climbing, etc etc etc marijuana is only dangerous when **abused**.
Hypocrites claim marijuana is evil and should be banished, end yet all most to a man these same hypocrites will do any or all of the following: drink alcohol, take any prescription drugs (which often times have terrible side effects, including the slow death of your liver or other organs...yes, that includes motrin and many other "daily use" pain meds), eat twinkies or any other crap that is not strictly healthy. I'm tired of having to listen to the holier-than-thou hypocrites telling me what manner of fun I am/am not allowed to partake in....especially since most of these hypocrites are the same jack-booted thugs that want the government to enforce their prescribed brand of living at the point of a gun.