First off, I apologize for my smart-ass remarks. If someone likes a clean knife, then by all means get next to godliness!
The arguments here are based on basic shortcomings in communication and understanding. A user knife performs better when it is clean and free of corrosion. An inexpensive knife should please the owner, whatever shape it's in.
A rare knife, with great history, a piece of the cutlery's history, has much more value in a form as original as possible. The subtleties of the swedge grind, for instance, are lost the instant the buffer touches it. If you are collecting knives to study history, it's clear that you don't mess up the history. If you want to sip cool, clear water, you don't stir up the pool first! So let's quit arguing about two different things.
Ignoring history is, well, Ignorance! But using a good knife is a pleasure! Both can be done, but not always with the same knife.
I approach my knives reverently, and yes I have cleaned knives, OLD ones!!
This old CLINE STEWART did not look like a knife when I got it the blades were completely hidden in a ball of rust! It took days of careful work to get them open and free, and get rid of all the scales of rust, without harming the lines of the knife. I love the remaining patina, and the fact that the knife looks virtually unused. Everything is straight and crisp! If it were polished down to shiny metal, its character and form would be lost. And I'd like to hear how many people have even heard of a CLINE STEWART before, or even seen one! If this knife were "cleaned" nice and shiny, history would be erased. Erasing/ignoring history is the number one road to tradgedy in the human world! Enjoy your knives how you like, but think twice before you clean an old knife!!