I usually get 4-7 shaves out of a DE and I just finished shave 11 from a Schick Injector blade. The whole corking and palm stropping process seems highly subjective. Some blades seem smoother after the first shave because the factory edge has become slightly dulled. Purposefully pre-dulling your blade seems counter productive to me. I also believe that the entire sanitizing issue is a tempest in a tea pot. If you rinse your razor after each use, let it dry and do not use someone else's razor, your chance of getting some sort of infection from shaving is nil.
It is just soap, hot water and a sharp blade. It isn't rocket science or a Zen ritual.