Think of your favorite movies.

Now imagine your kids never being able to watch them.

Same for books.

Same for music.

Games are an art form distinct from the above, and can in many ways be more powerful than they are. I've played games that toyed with my emotions in ways few movies can.

As such, they need to be preserved just as all the above categories.

I'm incredibly glad I can still play most of my 80's and 90's DOS games. People playing games now should still be able to play them. At least the ones that can be played "locally".