Speaker Cables? why all the hype for expensive speaker wire?

I have used 14g two conductor low voltage (for outside lights) copper wire from Lowes and Home Depot  for the last 20 years and have never even thought of upgrading speaker cables. The only changes ever made had been to compensate for length for speaker movement in different rooms and homes.After reading these discussion columns for the last several years, I began to wonder if, 1. more expensive speaker cables can improve my sound, and 2. if more expensive interconnects (than the flimsy red/white freebie type cables) can improve my sound.My very limited experience has been that the more elaborate and expensive speaker cable did nothing that was audible to me, altho' the banana plug "pigtail" that I had made facilitated switching between systems on my pair of speakers.However the interconnects, at first try, practically eliminated/veiled the higher frequencies.  The second try was the opposite, in  that they were extremely bright.  So I went back to the bag full of cheap interconnects that I have accumulated and again am quite happy with my sound.My conclusion is that what your ears tell you is the truth that you want to listen to.In my narrow mind, anyone that pays 3,000 never mind 30,000 for a piece of wire needs therapy.  Much like the difference between a Camry and a Corvette, both do the same thing i.e., move you from one place to another.But OMG, doesn't it make you "feel" better in the Corvette?

Ah!When the master of the Universe Millercarbon stops to critique my comment, I know I am onto something. "...you have concluded you not only know more than much more experienced listeners, you know enough to conclude they need therapy. Impressive. ..."Nowhere did I conclude that I know "much more"...but what the hell is an "experienced" listener?Is that someone who has the disposal income to go through an extensive and expensive trial and error evaluation?Is it someone who, like the Corvette driver I alluded to, has bought into all the Corvette marketing and feels bigger and better and smarter and richer and freer and...etc., than the Camry driver.It is copper, that is affected by resistance and inductance and capacitance in ways that may affect the end sound insofar as it may sound better or worse or the same.
All of the rest is simply marketing, trying to pry the extra bucks out of an "experienced listener" and stroke his ego.
If you want to spend your life and your money arguing to justify what goes into your ears as a result, Hey, this is still pretty much America.But do not hold yourself out as the expert as to what goes into my ears,Mr. Experienced Listener" aka "millercarbon".