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

aberyclark-

I am a "cable" guy, first and foremost. This is the forgotten component by many. No doubt that the technology and materials change profoundly every 10 years or so.  To answer your query- yes cables can a lifetime. After 20 years will there be a significant update? Yes as well. At some point in the future your gear will sound dated no matter how good it was brand new.
Cabling will age and/or sound dated too.

2nd note;

there are no dumb question(s) regarding Cabling.  Happy Listening!

Stereo5...Even if you're incapable of understanding satire, at least you were able to jam in your political commentary. Thank goodness for that.

Let's look from technical viewpoint.  Small amount of DC voltage on the amp's output, always present, causes drift of electrons called "drift velocity".  After a while all high quality electrons, that you paid for,  will be replaced by plain ordinary electrons.  

Nice K!   (Pssst ... Stereo5: he's kidding ; )