I can't vote for just one of these either. If I am on a roll (so to speak), a roll will get exposed very fast - minutes or so. If I'm spinning my wheels, then it can take weeks. Like others here I have film that has sat idle for months in a camera I rarely use.
However, I am not above unloading a camera, and marking the number of shots taken on it, then putting it back in the rotation. In fact, I just took a roll of Kodak 200 color neg film back, and have an empty camera with a rolls of plus-x with 8, trix with 9 and sfx with 14 shots taken in the case with an empty camera. Now for an inspiration.