Physical media can be had for very cheap on the second-hand market, so it also makes sense if you do not watch all that much.
The further your timeline goes into the future the more sense owning your media makes. You might not want to rewatch this movie in the next ten years, but what about the next thirty? Fifty years? Inflation will only make subscriptions more and more expensive. Thirty years ago a yearly salary of $40k was the same as a yearly salary of $100k now. It's funny how so many people think they earn more than their parents did, when in reality they earn way less. And that won't get better in the future. Maybe you won't even have enough money in your retirement to afford a subscription.