For me its because a lot of movies from the 80s and 90s are hard to find. Not everything exists online anymore. Popular movies generally do but ive had issues finding some things.

And then fast forward another 30 years. Will good movies from today still be there and will we be able to get them as easily?

I just store it so I dont have to worry. :)

If you mainly watch modern movies, then this is a not a problem. But I think a lot of modern movies are really stupid. :)

I watched the new running man and couldnt believe how dumb he acted.