I'm lazy, stinky, and sweaty around knives. Years back when the Spyderco Resilience first came out I grabbed one. I clip slid it into the inside top of my warm semi damp heavy winter boot. In 24 hours it had rust speckles. Over the years I've tried to be a little more responsible with maintenance. But I have a lot of steel and I find it a pain in the arse to molly coddle all of them. I try to go through them once a year for pivot and blade oiling, unless it's presently in use. I tend to have two three folders on the go at any given time. When I tire of them and switch some out, I try to touch the edges up and oil. But even that's not guaranteed if they aren't outside in the winter. I have a very basic knowledge of knife steel, and have by default bought primarily stainless, or semi stainless. I have a few carbon Opinels that are razors, and a boat load of heavy duty, or regular, stainless and carbon Moras. A few are abused. I noticed that one was a bit rusted the other day, and I just put it back. I will deal with it when I use it, or just prior to.