A significant part of DSotM's appeal is the recording quality - Alan Parsons and the band were at their experimental and mixing best. There is such depth and width to the album (crank up the 1/2-speed mastered album on a really good sound system some time). It still sounds good today (minus a couple of saturation of Gilmour's guitar solos on Time and some saturating vocals on UaT).

It's just a great sounding album (in addition to the reasons you all have stated above).

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"David Gilmour can do more with one note than most guitarists can do with the whole fretboard."

Dave Mustaine (Megadeth)