I just prefer no backlighting. I personally find it really distracting.
Good point, I never look at my keys either. I have backlighting but I turn it off when I'm on my desktop, the only lighting I like that I did myself are my numerous LED's (green) behind my monitor to give my backwall a soft glow. It helps with my eyes when I'm working on music for a long period of time. I'm a light whore, but when it's put on EVERYTHING is when it becomes to much.