I'm a bit of a fan of Dr. Carl Hart. He's a neuroscientist who is studying drugs, drug addiction.
From his website and tedtalk " We brought crack users into the laboratory and offered them $5 cash or a hit of crack worth more than $5. We repeated this many times with each person over several days in the laboratory. The drug users chose the drug about half of the time, and the $5 the other half. Even a nominal amount of money was enough to deter them from taking the drug at least half of the time. These findings are inconsistent with the notion that crack users display the insane, “anything for a hit” behavior that I had been previously taught.
My research demonstrates how attractive alternatives, e.g., viable economic opportunities, can go a long way in decreasing societal problems, including drug abuse."
His website is worth the perusal. Plus he is really hot. Well his hotness is really just a bonus.
dr.carlhart - Where Drug Myths Die