I think it's just impossible to stop doing something you like to do, or have done repeatedly, for so long. Especially when you feel good doing it. If someone told me they would pay me millions not to eat pizza, I would probably get busted for eating pizza within the year. I think he is so used to smoking wacky weed he can't stop. It's just a part of his life. While it is possible to change one's life, and kick a habit, I think it hard, regardless of whether something is addictive or not. I'm not going to be critical of him, but when you do something and you know what the consequences are, you have to pay them. The hardest part of life is when you don't understand the consequences of your actions, and then you have to pay the consequences for what you do. But Ricky knew. It was likely a conscious decision to skirt the rules.