After reading the most recent journal I became quite psyched about getting a single speed bike. My wife, who tends to have the money smarts in our family ;-) asked why I would spend money on a new bike when I could simply leave my multi-speed bike in one gear and not change it.
Why not? Other than maintenance issues, would I not get the same workout benefits from doing this? I could just select a gear that provided the appripriate ratio between my front and back wheel chain.