Or is it?
Bike, Toronto, Aug 2010
Indeed not. That is why you have a shutter speed priority (Tv/S). Sometimes you want to show motion, and you do that by blurring things.
I took the shot above while panning at 1/15th of a second (and f/22 at 100 ISO: it was a bright day in Toronto). It shows “in a hurry”, dynamic motion much better than a “frozen” picture of the same subject would do.
