I am not sad to see them go. It's the same for any kind of medium...8-tracks, beta, laserdisc, cassettes, VHS. I'm wondering what is going to make DVD and Blue-ray bite the dust. On the other hand, I am glad to see vinyl start to make a comeback.
The only thing that sucks about VHS is there were a good handful of movies that never transitioned to DVD/Blue-ray since they went out of print.