User blog comment:Paarthurnaux/Alteration?????/@comment-3492791-20120916182258/@comment-3492791-20120916185453

Water breathing! I knew I forgot one.

My point is you never really NEED light. Sure sometimes it helps, but you can always go without it. In Darkfall cave in Dawnguard, there are massive portions of the cave in litereal pitch black darkness. You can't even see the weapon in your hands. That is when it's useful. (Which we had more dungeons like that)