Audio is one of my escapes, and I'm quite content to dabble in the voodoo and black magic aspect of it. I'm finding good arguments on both sides here, but by in large I won't let the science of playback limit my experimentation.
I agree with Rsbeck that many root problems in audio can be solved by changing components, but I also believe some problems can be solved by changing cables as well. Changing a component isn't always practical nor always desired. Sometimes one might be completely enamored with a component except for one small characteristic. I've found that as a final tuning device a cable change can sometimes take care of that.
I know some people don't agree that a cable should be used as a tuning device, that one should choose cables that pass along as much of the signal as possible and buy a warmer sounding amp if that's the direction you'd like to tune your system.
But for me, I find that approach limiting, since ultimate resolution is not my goal. I am impressed by detail, but I'd rather be seduced by the music. Besides, how can we determine at what point a cable crosses over from being veiled to artificially detailed?
We all have different tastes and priorities in music and audio presentation. We're all searching for the sonic balance that pleases us most. Some place detail and transparency over an organic nature, or vice versa. Just as in audio, I'd choose the dark eyed belly dancer over the blonde fitness trainer. They're both beautiful, but I prefer my music with hips.
I reserve most of my skepticism for religion and politics.
