You caught me, Dave.
Since I went over to the "digital" Dark Side, I have used Canons exclusively, first the 10D, then the first 5D, and now the 5DII. Like most DSLR users, I have collected an assortment of lenses that I was sure I would "need," including a 50mm, a 100mm Macro, a 15mm fisheye (Sigma), a 17-40 zoom, a 24-105 zoom, and a 70-200 zoom (with extender).
On my 10D, about 90% of my shots used the 17-40. When I moved up to the 5D, I got the 24-105, and at least 99% of my shots since then have been with that lens.
It isn't easy to be rational about equipment needs.