I'm not one of them Don't really have many blades at all. More than a year ago I bought 100ea of red personnas, israeli plats, feathers and GEM SE. Since then I've only bought 20 astras and GBEs. Still going through them with most of them still there.I guess it comes back to the days when I only had one razor and changed blades for how I felt. Since then I always take the blade out and give the razor a wipe down and store them empty.
I guess with the quantity of blades some of you guys get you don't need to re-use blades!