Why do we even have a film registry? As long as the internet stays around, we'll have EVERY movie. Plus, there was movies over 100 years ago and no one cares about those...
It's just extra storage. Trying to make it seem like we're doing something to preserve the country.
"Without out libraries what have we? We have no past and no future."
---Ray Bradbury---
This comment of yours seems very short sighted and ill-conceived. A few things:
1) Older films, (especially silent films), were filmed on Nitrate stock and many studios, along with historians among others, have been moving these films into the registry at the library of congress to preserve them and keep them from further deterioration, or worse, burning.
2) The library is digitizing most of these films so they can be further preserved and live on into next generations.
3) As the quote said above, "100+ year films" provide a useful look into film history, practice, and theory that a person who "doesn't watch them anyway" would not obtain. I own many of these silent films that were selected for the registry's special task of keeping them restored. An example is a Kino box set I have of Edison films from the 1880's to about 1910's. All of these films were in dire need of restoration and they, along with the MoMA, did a marvelous job of keeping these films from perishing completely. A truly fascinating cinematic piece is the "Dickson Experimental Sound Film" which illustrates a number of things to film historians and allows them to reevaluate their opinions on the silent era. Much like an archeologist find after an extensive dig...
Try to imagine yourself in the Silent Era. You get your first look at this "silent film" as you enter a film school. It moves like very primitively, flickering, the shots staying relatively stagnant. And you keep still because you think that maybe it's visual aesthetics is based on movement like T-Rex - you'll lose it if it doesn't move. But no, not silent film. You stare at it, and it just stares right back. And that's when the surprise comes. Not from the so much from the mise-en-scene, but from the edit, from the other two montages you didn't even know were coming. Because silent film's a trend setter, you see, it uses coordinated mise-en-scene and editing patterns and it's aesthetics are still used today. And he shoots you with this... a Lumiere Cinematographe, it works like a camera, but also functions as a projector. It doesn't bother to bombard your senses like a Star Wars film, or perhaps Avatar... no no. It surprises your initial conceptions of current film here... or here... or maybe across the eye, opening your minds eyes to previous unknown conceptions. The point is... you are alive when they start to surprise you. So you know... try to show a little respect...