How are your CDs?

Just a question for Big Finish fans who have been collecting CDs, have you noticed them getting CD “rot” at all, or are they in good condition? As in CDs which are quite old, less so concerned about the newer ones.

I currently don’t have a device to store and download my digital audios so the only way I “own” them is if they’re physical discs. I don’t really trust the cloud and the Big Finish app in the future to protect what I own with licenses etc.

So just wondering what’s preservation like for much older CDs?