I think we know. Most important is the desire to use something new, fresh, virginal, every time. There are practical aspects that include consistency, and knowing the blade is never going to show any meaningful sign of deterioration.My favorite foul (missing obvious statements of fact) in this entire BBS is the thread called "One and Done". In the dozens of pages and hundreds of posts not one of them states the answer to the obvious question :Why would you use a blade only once that may have many cycles left in its life time, or worse yet, might get better with each use as various 'coatings' wear off. ???
Yeah, some of the blades I use are remarkably consistent for multiple use. For instance, the Personna Comfort Coated or Dorco Titan and Primes, even the Kai blades. But there are some blades that drop off quickly, like the Feather. The only "rational" explanation would be because you've over-bought so many blades, for multiple lifespans, that you need to use them up. I'll give them a little slack though. Everyone has their own priorities when shaving. I strive for comfort. Some like to test the limits of aggressiveness. Some just like a fresh blade. And everyone is open to shaving change at some point. It makes this hobby sort of fun.My favorite foul (missing obvious statements of fact) in this entire BBS is the thread called "One and Done". In the dozens of pages and hundreds of posts not one of them states the answer to the obvious question :Why would you use a blade only once that may have many cycles left in its life time, or worse yet, might get better with each use as various 'coatings' wear off. ???