I read somewhere that lightning can delete your electronic files from your computer and also from the discs you already burned! Wouldn't that be another disaster if your one and only copy has been erased? So where can you store those discs out of reach from the electro-magnetic field burst that a thunderstorm might bring? Apparently, putting them in plastic cases and in boxes or drawers is not good enough. If they are stored away not to be used for a while, it is suggested to wrap them in blankets or anything that has enough padding to break the path of the destructive electro-magnetic field from reaching them!
If you buy your CDs/DVDs in a spindle, you'll notice that the first (top) disc is clear. That is the same material the CDs/DVDs are made of. Contrary to what most believe, the side of the CD/DVD you must protect from scratches is the top part, not the bottom part. That silver (some come in different colors) label that covers the top of the CD is where the data is written. It that label peels off, all is lost! Why not try slicing off the label of an old CD you no longer use and see what happens.
Therefore, protect the label from getting wet, from handling with oily fingers, from food (sure, admit it...we are so glued in front of our computers that we eat right there), post-it-notes... Oh, yes, post-it-notes. I learned my lesson the hard way before. I temporarily labeled a CD with a post-it-note! Duh!!! When I peeled off the note, along came a piece of that silver label. I couldn't find our Sedona, Arizona pictures anymore. That must be the Sedona CD [sigh].
The best way to not lose any of your digital pictures is to burn them on CDs/DVDs and make copies to give away to family members (who don't live with you) and to friends. That way, if anything happens to your originals or to the copies you have, all is not completely lost. You can always borrow the copies you gave away.