I love sacd. I even love the rounded jewellery case -prevents me from poking my eyes out and provokes my non audiophile friends into conversation. When expecting guests, I'll scatter them about.
Audiophiles are pretty much the only ones to buy sacd, wouldn't you agree? Most people buy a regular c.d. player, (unless they bought an sacd player by accident) buy regular c.d's and 'that's good enough for them'. They are satisfied. They really don't care. Example, a buddy of mine (I stress only a buddy) exclaimed "What's wrong with my $100 c.d.player? It sounds as good as yours" (Oh, that's also $100 cdn., too) The source? Sony SCD-1. The sacd? Pink Floyd Dark Side of the Moon. What a muppet! I swear he reminded me of the monkeys at the beginning of Stanley Kubriks 2001: A Space Odyssey.
Let's face it -audiophiles are a rare breed and most other people are probably more visually inclined than aurally. Perhaps if sacd looked different, the masses would catch on. And, to the audiophiles that claim it is dying (again, I don't think it will ever be mainstream but I don't think it will die, at least not as long as people are willing to pay $30,000 for 'a stereo') I think it's just a sense of pouty arrogance. You know, "...oh, nothing they can ever come up with will please us..."
Just my 2 cents worth.