Digital and film are pretty different mediums - you may not use an LCD for your personal photographic vision, but you can solve your problem by simply turning it off. Digital requires a much higher level of exposure accuracy than film to avoid clipping, and therefore an LCD with instant feedback is extremely important for people who use their digitals for critical work. I wouldn't buy an m9 without an LCD for even half the price of one with it.
Because even if you shoot RAW, over-adjustment of white balance in post degrades the file - it's better to get it right IN camera. And also, lots of people are JPEG shooters, and I suspect more will follow with cameras getting better and better at processing.