The jury is still out, but, with care, you may see a 50-100 year life span. I can tell you that when I had some CDs stolen from my car a few years ago, I was given full replacement cost by the insurance company who said it was because they don't degrade.
There's been a lot written on this subject (Google "CD Longevity").
The life span may depend on the quality of the disks you buy and the care and conditions you impose.
See  http://www.audioholics.com/techtips/specsformats/CDDVDlongevity.php


Dale E. Heltzer wrote:
Okay, so a friend for whom I've transferred several reels of audio tape
to CD says he's heard that there is a question about the long-term
viability of home-made CD's.

My initial reaction was to dismiss his concerns - there being
(literally) zillions of blank CD's sold to people who want to *preserve
their data, and who would be *really *pissed-off if the media failed
intrinsically...

But I thought I'd check it out.

Anyone?

Thanks.
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