My take: Yeah, I am buying it.
First, there are the extras. Very nice stuff. The show itself was classic. I think there is no problem arguing that. Easily one of the top ten (would say top 5, but I don't want to create arguments). Add in bloopers, and it makes the stuff funnier. Little slip-ups in front of the audience. I always got a kick out of that stuff.
But to have access to all of the episodes, unedited. That is something I like. Like other TV shows I have, or even music video comps, it is something about control. "Hey the stuff still comes on." But there are a lot of episodes, and it is a matter of waiting. Sides, there is that report about how they don't show certain seasons. Can't remember which ones. Reminds me of how Comedy Central failed to show Kids in the Hall episodes. Always the same ones. Always. So... yeah, you buy the stuff.
That freedom to go from season to season and pick out what you want to watch, or, if you have friends who want to relive a particular moment... For me, the Downtown thing has been stuck in my head "Like the song." "That's where it's at." "Downtown." But don't have much control over when the episode comes on.
Then, there is quality. Quality of the episodes has regressed on tape, but I figure they went back and did some cleanup for the DVD. Also, no commercials. Woo-hoo.