The local charity shops sell movies for €1 each, and boxed-sets of TV-series are typically no more than €5 each. I even managed to pick up a decent DVD player to sit under my TV for €25, used.
Before this I used to stream to a chromecast, with VLC, but it was always a bit of a pain. Now I can pop in a disk, or tell my child to do the same, and hit play and everything just works.
Streaming services are pretty, but you can't rely on them for keeping content available, and it's risky to get sucked into a new show that might get cancelled after one, or two, series. Much better, for me, to watch all those other shows that are complete, or nostalgic.