Most of us still watch movies on our VCRs. That is pretty amazing considering VCRs were invented in the late 1970's. We finally have a medium that can supplant the VHS platform. DVD isn't that expensive, considering what it can do. Discs require no rewinding, don't wear out, and are smaller and easier to store.
Most movies have more than one language available on the same disc.
The sound quality is incredible as well, with many movies supporting AC-5 Surround Sound as well as stereo. That's a small price for all the features you get. I'm not buying any more VHS Anime, mostly because I realize that VHS tapes don't last forever. I think DVD will take a few years to take off, but not quite as long as regular CDs took to replace casette tapes. CDs came out in the beginning of the 80's, but they've only recently replaced casette tapes as the medium of choice for most people.