Dumb question #643: should speaker cables last a lifetime?

I had a set of cables with a clear covering and over 15 years all the copper inside the cable also oxidized, turning green, not just the ends. So I assume that even good quality cable might slowly deteriorate over that period of time

clear isn't good

also could have been low quality cable(?)

and.. the surface of the Cu oxidized, but did the core?

Copper oxide slows down further oxidation.

I think the cable hype is just that, but the oxidation thing has got me thinking...  thanks! 

Mitch, stereo5, that’s funny lol..they should last more than a lifetime, here at Agon cables lifespan is only three weeks... Either we retire them or replace them as often than our underwear...