Quote Originally Posted by Nullific
While it really depends on the crop, most sources will tell you it takes 100 kg of coca leaf to produce 1 kg of cocaine. That is 220 pounds of coca leaf to 2.2 pounds of cocaine, in other words a 100:1 ratio.
Also, cartels may be using modified coca plants that are larger and produce more cocaine.
Here can be seen a parallel between marijuana and cocaine; some marijuana plants contain as little as 1% THC while other plants have been modified to grow up to 30% THC. You can also refine marijuana into the more potent hash through a number of methods that arn't very difficult.

This is not to say that cocaine and marijuana are equals, just that you gave an exaggerated and still poor example of why people shouldn't do cocaine.
Well howabout this cocaine will scar your heart muscle, and weaken it. Weed is such an incredible drug because it's completely safe, but very effective in getting you high. And besides, don't they refine coca leaves in gasoline? That can't be too good.