No question there. But sometimes you have a shot that can't be repeated because of the sky conditions or whatever, and a screwup has occurred. I had a shutter malfunction recently and got an unrepeatable shot that was 2 stops overexposed. The reduction saved my bacon, and it looks like this one may be a good seller. I agree it is a method of last resort, but it sure doesn't hurt to know the technique to use when it is necessary. I also know of some people who routinely overexpose and bleach back intentionally because it delivers some unusual tonalities that are impossible to achieve even with the most anal-compulsive zonie technique.