You could just admit you enjoy doing something that isn’t healthy for you.

Until you get emphysema or cirrhosis, sure. Then its not so fun. The trick is in finding a happy middle ground between short term creature comfort and long term pain.

I used to guzzle soda out of a fire hose. Then my teeth got so bad that I had to go through a root canal. Not fun. Now I don't touch the stuff.

Fortunately, root canals are something you can walk away from. Not everything is so easily treated