It would be kind of silly to consider the actual smoking to be a hobby.
But the PAD and TAD certainly could be considered that.
No different than someone with a wine cellar who collects fine wines. Drinking the wine is not a hobby...but the rest of it could be called that.
All of this of course is to varying degrees depending on the individual. But, IMO, unless you only have a few pipes and a relatively small stock of tobacco, then it is to some degree a hobby. And yes, you can still be an addict or an obsessive and have a hobby at the same time. Most hobbies are an obsession to some degree.
But the PAD and TAD certainly could be considered that.
No different than someone with a wine cellar who collects fine wines. Drinking the wine is not a hobby...but the rest of it could be called that.
All of this of course is to varying degrees depending on the individual. But, IMO, unless you only have a few pipes and a relatively small stock of tobacco, then it is to some degree a hobby. And yes, you can still be an addict or an obsessive and have a hobby at the same time. Most hobbies are an obsession to some degree.