What you’re describing is data hoarding. I pirate a ton too, but you know what I do with a movie or TV show after I’ve watched it? I delete it. Poof, gone. But it’s still in the most important dataset I have. My memory. To help with the metadata of my own memory, I write down a list of the films I’ve seen. I only keep the movies I really love and want to rewatch (Robocop). That TV show I just finished that was great…
Then he realized he had a box full of DVD-Rs, nicely ripped using DVDFab Decrypter and processed and RCE-stripped with the latest DVD Shrink, but had never gone back into that box to rewatch any of them, and had never been asked by anyone if he had any of those movies.
It was at that point where he decided if he really liked a movie, it was worth buying to have the original box and leaflet.