To go off on a parallel topic for a bit, I haven't used a desktop or a wallpaper for some years now and it's great. Both are a bad idea. The desktop is a magnet for sloppy organization. You'd be surprised just how much more organized and productive file system and shortcut usage gets if you turn off desktop icons. And a wallpaper is just distracting. I've never found a wallpaper that I didn't want to change after a while. I even tried minimal gradients. What ended up working perfect, as in I'll likely never change it, is a solid black wallpaper.
Concerning not using a wallpaper, functional benefits aside, someone might think that this would take away the bling of an expensive laptop, but that's exactly what I find appealing about it. This way you're treating the device, not as a status or fashion statement, but as a functional tool.