There is a reason why you want to quit then. What is it? Obviously it's not money or fear of losing a job, your wife or your life.
You have a belief that it solves all your problems. So...what's the problem?
I couldn't see it until I got away from all of it. I wasn't worried about money or dying or losing a job or family, either, but I was an empty miserable shell of a human being. I found no joy anywhere outside of getting high. I believed - truly believed - I needed it to function in this world; to check out from all the craziness. I disliked everyone. I thought I knew it all. I was angry, confrontational, resentful, and self-pitying. I felt I was too sensitive, too aware. Honestly I was all those things, I created them by applying an unnatural substance to my brain. Years of substances, lots of them - including an ever-increasing variety of pharmaceuticals. I never abused my prescriptions either, but they were part of the problem.
I hope you'll find a "why."