I think it would be useful for any of us that have experienced QR to consider the staff number as more of a serial number. Everyone is simply a device used to keep the machinery in motion. Remove your emotional element, ie: loyalty, etc, and maybe things will make more sense to you. Some tyres on the aircraft get retreaded and some don't. Some brakes get overhauled, some do not. You get the idea, everyone is just a unit part in the machine.