Same reason I have a bookshelf instead of just a list of pdfs and ebooks; its a lot nicer to browse through a curated collection physically.

I don't like caring about individual copies though, so having a way to recreate them cheaply on lost/damage/borrowed-but-never-returned is pretty useful imo. I get to treat it both digitally and physically on preference.

Ofc, all the stuff I haven't watched, like but wouldn't recommend, etc will never leave digital. The ideal scenario is just that I can pull a dvd off a shelf when I recommend it, instead of scrambling for a usb or mega or scp; if its possible, physical sharing is a lot nicer than digital