I do, as I generally have different bikes tailored to different purposes, although the last couple of great bargain opportunities I saw have created some redundancy in my collection - I may actually have some rationale to sell a couple of bikes as a result. But unfortunately, the bike that is now my most redundant - my Trek 510 - is also one I am emotionally attached to, because it's the bike I rode across the U.S. on back when I was in college during the summer of 1980. I just put it in top notch riding condition to sell it, with new cables and bar tape and freshly matched tires, but I can't bring myself to actually list the thing.