My own experience is different. I had several brands of CD media that lasted less than 10 years. Many of them you could see the damage (cracks through the shiny

My own experience is different. I had several brands of CD media that lasted less than 10 years. Many of them you could see the damage (cracks through the shiny layer). Some were dark blue, some a light blue. Almost all of them were bad. I had them stored in a light proof zipper pouch and stored at room temperature in a closet. Maybe something special happened to them over the years but very few worked. This would have been some of the first CD-R and CD-RW media available. I opened them more than 20 years ago so the media would have been 30 to 40 years old today. Anyway, I haven’t trusted optical since then.