I'm not a long time piper by any stretch but I've already noticed lulls in my motivation to have a pipe or cigar.
I may have 2-3 bowls a day for a week, then I may go a week with none.

I'm that way with drinking too though. Some weeks I'll go through an 18 pack. Here lately I haven't really wanted any. I bought a 6 pack a month ago and 2 of them are still in the fridge.

It's all about what kind of mood I'm in and what I'm wanting at the moment.

Its natural I guess.