On the one hand, even finding a DVD player that still works can be an uphill battle, and 480p looks like shit when it gets upscaled by a modern TV.
On the other hand, there are 100 titles that I already own outright. I don't have to chase down which service they're on or sit through all the ads it injects. I know that they'll always be there, even if a reality TV exec buys a prestige studio and starts deleting their backlog over in pursuit of some handwavey Hollywood accounting.
I should probably donate them and save my space for things I actually use, but I have a hard time committing to this world where we're perpetually renting access to our cultural heritage.