I've wondered, too, why so many list members use UVs or Skylights as "protection". It seems to come down to shooting style; some folks leave lenses out and about while shooting and risk damage. I've never felt the need for them. In fact, I've poked the glass out of a few in order to extend rubber hoods a bit more.
Having said that, next week I'll probably smash the front glass of a favorite lens.
Paul Stenquist wrote:
In truth, there's no comparison. In the shot laeled 29, flare has basically ruined the photo. A huge ribbon runs down the middle, the trees are muddy and the result is uneven. In 30, the image is clear and crisp. UV filters are strictly for amateurs and neurotics. Why would anyone buy a great lens and cover it with a mediocre filter. It defies logic.
snip...

