I dissagree many people don't use these pain killers because of the fear of addiction, but addiction is only a problem for a small number of people why choose or must use a high dose. If anything people are not using enough of these pills because of the stigma. Maybe this will help remove the stigma.
Also, what about episodes like thalidomide where women were told it was safe as a sleeping pill and to treat morning sickness, then it was discovered years later that it was leading to birth defects? This kind of thing goes on all the time and there are many examples. For the drug-makers, the money is the thing.
Remember, Satan uses "natural law" to spawn things like pornography, alcoholism, smoking, etc. and the more people who say it isn't wrong, the more he gets his way.