The line you draw between opioids and other drugs is a false one. Addiction will happen regardless the medium you choose to express that addictive tendency. And all of the empirical and anecdotal data shows that when you have easy access to things, you use better judgement. For example: You can, at this very moment, ignore every single red light you encounter today in your car. There is absolutely nothing stopping you from doing it. But you don't. Why? Same with heroin, or any other narcotic. It's a choice. And, the data proves that when people have the choice, they make the right one. (For some people, they make the wrong choice first, and then get turned around and make the right one. And some small percentage just die. But far fewer die than are murdered supporting an illegal trafficking market.)