Most of my CD collection is from the 80's and 90's and I've never done much to take care of them. Many have spent a decade or more of their life in a car. Most of them spent ten years in my attic that gets very hot and very cold.

Out of 100 disks, only five or six have failed and all have been because of scratches on the foil side (or whatever the media that the music is encoded into is called).