DNG does have a few saving graces after having lost all my files after a HD crash some time ago, I was able to recover all my files, but on recovery all of the exif dates and XMP data were lost, and the dates and times were all from the day I recovered the files from the HD. 

 By converting the images to DNG and then back to Raw I was able to restore the lost data, may not be important to some but, I tag my images by dates and times..

There are three other pretty big advantages to DNG: 1) they're smaller; 2) they can store embedded XMP metadata, negating the need for sidecar files or proprietary databases; and 3) they support embedded full-size JPEG previews for quick rendering. Of course all of this is moot if you're using one of the unsupported programs, but if you're asking this question you're probably not.

Besides, I'm not entirely sure anyone really needs anything other than Lightroom/Aperture and Photoshop. The other software supporting DNG is just icing on the cake.

Danny O'Byrne  http://www.digitalartzone.co.uk/

"All the technique in the world doesn't compensate for the inability to notice" Eliott Erwitt