Real Nikon Lover wrote:
It is NOT a good habit to store photos on a card and start shooting again. Back your photos up to a couple of source drives. Before every shoot I electronically clean my sensor and use freshly formatted cards. Why risk losing ALL of your photos on a card if they are not backed up? I have some cards that are 20 years old but do not use them. They still work and probably won't fail, but why tempt fate?
"It is NOT a good habit to store photos on a card and start shooting again." That may have been, and probably was, good advice when digital cameras were a new thing. Todays' cards and cameras are vastly improved. You can use the same card until it is full. You can even swap it between cameras and brands of camera.