Addiction or hobby?

Addiction itself typically refers to two elements:

1) physiological changes that produce both a tolerance of the substance and rebound physiologically stressful response to the removal of the substance (withdrawl). Not all of this has to be present (no withdrawl phenomenon is easily identifiable with halucinogens for instance).

2) maladaptive behaviours that are adopted to obtain, secure or use substance. So, by maladaptive, this means that the behaviours are continued despite the real/understood and accepted understanding that what you are doing is ultimately harming you.

So, you may very well be dependant on the nicotine. I will give you that one, but many could argue either way on this. To me its rather inconsequential.

Now, if you are spending more than you should on cigars, if you are missing work or risking trouble at work to smoke a cigar. If.....blah blah blah. Then there may be a problem. If you accept that cigars are GOING to 100% give you cancer (if it could ever be stated with such certainty) and you can't quit, then there may be a problem. Otherwise, probably not, at least psycho-physiologically.