Audwulf wrote:
Picture this: You are at your grandsons graduation. You are shooting in "Auto". Your grandson is at the podium, receiving his diploma. You have a beautiful frame of him turning, with a brilliant smile. Just as you press the shutter release, some )&*%^$# stands up between you and your grandson, and you have a wonderful shot of the back of some )&*%^$# bald head, because of "Autofocus". Nuf said.
How would this have been any different if you were shooting manual? You would still have someone blocking your view. Perhaps you do not understand that you can lock autofocus, either by holding the shutter button half-way down, or using a lock button. Either way the subject remains in focus regardless of what intervenes. Essentially at the moment of exposure the camera is in manual focus mode. The advantage of autofocus is that if your grandson moves the autofocus is more likely to capture a sharp image.