having used both, I know for a fact that Cannabis is less addictive than Opiates. Was on Opiates for severe pain for 5 years, moved back to California and got back on a regular regimen of cannabis. Now I rarely have to use pain meds. When you are on opiates for a long period of time and miss a dose, you get very sick. With Cannabis, I can take it or leave it without illness or any other side effects.