drummstikk--you're arguments are valid to a point, but not everyone's needs are the same. I am shooting cyclists going by at 30mph, and the more I can capture individual athletes the more shots I sell. I'm not shooting for a masterpiece or even a cover photo, I'm selling to the individuals, and everyone that I miss is a lost sales opportunity.
An old school way to do this is pick your spot, set your focus and capture them as they go by. Except when they go by in groups, this doesn't work. Old world there was nothing you could do about it. With the latest and greatest I can refocus (or at least a good AF can; I doubt it's humanly possible, certainly not for me!) and recompose the shot multiple times in the span of 10 seconds and capture a whole lot more of what I'm trying to shoot.