Hobby. But, more than that, I think of it as therapy. I was a very serious and dedicated smoker for about 23 years. That was my hobby. When looking for a way to stop, I (finally) realized that I couldn't afford to buy cigarettes if all that money was wrapped up in photography, an old hobby revisited. Within a short time I was so absorbed in the photography hobby, I couldn't find the time to even "think" about smoking. That was some 9 years ago . . . Cold turkey, over night. Within a couple of weeks of replacing cigarettes with photography, I was completely cured. No more coughing and hacking, and my sense of smell and taste all returned within a year or so. Things I have learned from this . . . 1. Money can be found, but there will probably be a trade-off. 2. Smoking is not an addiction, it's just a habit. If you want to quit, then change your habit to something that is more interesting (and safer). 3. Now, I have this stupid habit of taking a camera everywhere I go . . .