jayctoy, I think there may be another side to this topic you didn't address above. Agreed that there are people who don't or can't hear any difference between any cables, regardless of price, for this topic letsĀ forget this subgroup. But for some of us that can hear the difference, its not an all or nothing proposition. If I like the music I am playing I am going to connect with it no matter the cables I am using. It does not become an all or nothing proposition. So for us that it is only an incremental improvement, and not a matter of "emotionally connects" or not, $5K seems a bit off the wall.
That said, if I was rolling in green and had my kids set up pretty and I easily afforded a megabucks system I wouldn't think twice about it. But only if.