Wait a minute...(I'm ignoring the pun)...

I was told that the life of a paper picture AND a digital picture (storage of file) was limited...as best I remember 50 - 75 years, the digital longer. Why would the digital have a finite life? Couldn't you just reburn it to a CD every 10 years or so? Do you lose something when you do this?

I want to preserve my digital photos (masterpieces of my grandchildren IMO) on CDs.