Another nice aspect about smoking a butt is the moisture from the meat helping with the seasoning of the smoker beyond the smoke.
Then there is finger food, sandwiches, more sandwiches, left overs, etc. The butt lasts a tad longer than ribs. There is something really satisfying, if not downright sadistic, brown bagging lunch in the office and gently microwaving some pulled pork and eating a hot pp sandwich in front of your co-workers. Actually it is cruel fun. I do it regularly.