I don't get the disc as all it holds are easily obtainable free downloads and podcasts. It's nice to have the one disc having it all type thing, but you certainly don't need 12-13 of them a year as much of the content on the disc is simply recycled month to month.
And yes, they even put game demo's on them on occasion.
But for me, there wasn't anything special enough about having the disc's during my first subscription to warrant the extra money on my following ones. I still buy a magazine off the stand every now and then when my sub runs out and before I can get it going again. The disc's still have the same old shit on them.