And mcl (and lot of us) are sure enjoying it a lot... no doubt
But seriously speaking Navin I think everyone has his or her perspective. When you say that the difference between a good audio system and a mediocre one is as clear as the difference between day and night it is your perspective. One where you can talk about highs, lows and mids even in your dreams. You dabble with these systems day in day out. On the other hand another guy (many others in fact) just listens to the audio when he is stuck in a jam. He never experiments with sound, never gets to basically. He never had a chance to listen to two systems side by side and decipher. So he has his perspective when he says I do not know why ppl spend so much on high end systems.
And finally, because people like Navin are there that others like us manage to run to them when we need advice. Because to many of us probably these things make zilch of a sense
