Water consumption should be driven by thirst!

My Kaiser guidebook says that you don't have to drink 8 8oz glasses of water a day. They say that water consumption should be driven by thirst. What a novel idea. I am frankly tired of seeing my workmates walking around with a water bottle attached to their hands. They gesticulate with the water bottle to emphasize their points in conversations. Some of them have 7/11 Big Gulp cups filled with ice and water next to them at all times. You'd think they all lived in the desert or worked in the hot fields. I am against buying bottled water anyway, except for emergency supplies. We have great water here in the Bay Area and it's cheap. I will flash the Kaiser guidebook around to prove my point. Maybe I can wean these babies off the bottles.