Factory cd lifespan

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I am thinking of finally ripping my cd collection. It's been a few years since I've even listened to some of the older CDs I have and am wondering if I will have any problems. Has anyone had factory CDs long enough that the errors are getting out of hand? I tried to search the web but all I found were specs on CD-Rs not factory. Does cd rot affect factory CDs?
 
My own personal collection dating back to CD launch day is perfect both audibly and visually. I have seen one example of true 'CD rot' on a boxed set from the local library. Held up to the light and it was like looking through a net curtain. All the discs were unplayable. Storage conditions and history were an unknown.
 
Same with me. My very first CD, "Transformer" from Lou Reed, bought in 1984
runs without any problems in 2015. Got a collection of about 500. Found only one "rotten" CD (Thousands of tiny holes in the aluminium layer) recently - at a second hand CD shop. But no, none of my CD´s detoriated, even those with deep scratches on the label side.
BTW, the very first CDrs I own (bought in 1994) still run whereas later mass-produced CD-Rs detoriated. Must be the thinner varnish on the label side which allowed oxygen to diffuse into the dye of the information layer.
 
Pressed CDs should last forever, unless you scratch the label side and make a hole.
I have some pressed CDs with holes in them because a screwdriver fell on the label side, one of them plays fine, the others have problems when the laser gets to the damaged part.
But depending on the size of the hole, the disc can play just fine or have serious skipping problems.
 
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