Not everything is available on streaming. Even things that are available might not be on the services they have subscribed to. Also, while DVDs often have a “play all” option, you can typically play a single episode, and it will stop when it’s over, which is pretty useful for helping to limit how long the kids are watching TV.
The biggest improvement in socks since the '80s was when they moved the seam from the end of the toe to the top of the toe. That seam was the bane of my existence.