I'm curious what people think about hotels leaving lights on in the rooms all day. To me it seems extremely wasteful to turn on my lights just so I am spared from the awful task of having to flip a light switch when I walk in the door. It also seems hypocritical to have signs in the room asking you to reuse towels to save energy. Why is one ok but not the other? I stayed at the Cosmo in Vegas last weekend (nice place), they even turn the TV on to a music channel to set the mood. If most European hotels can handle requiring entering a room key to turn on lights, I would think people can handle entering a dark room. Am I alone in this?