Yep, he seemed to have a tendency to be easily addicted to many things. Alcohol was his first and foremost love, pot was second. He was also diagnosed as a love addict, and whenever life got rough (gee...every day) he had to take a zanex to get through it and calm himself down.
I agree with other posters that although you are obviously curious and wondering about what else he is or could be addicted to, you really need to focus on yourself.