I'm 19. I was exposed to Star Wars for the first time through this release in the 90s:
I watched them so many times I wore out the tapes. This couldn't have been any earlier than 1996, I was 4 years old. Out came the special editions. I hated them. Out came the prequels. Appallingly bad.
I don't think you need to be someone who watched the original film in theatres back in 1977 to understand why it is culturally significant and deserves to be preserved.