Still, the ideal would be to develop a medium that can last indefinitely without needing special conditions. Civilizations fall, refrigerators stop running, vacuum seals get broken or eroded. Our civilization needs something with the durability of marble, or beyond, if we want future historians to know what we thought and did and created.
Of course, what survives a civilization isn't always what that civilization would expect. I learned this from my Uncle Emmett, who for a long time was the world's leading authority on the study of ancient clay tablets from the Mycenean civilization. Those clay tablets were seen as a disposable, temporary writing medium, used for everyday things like inventory lists, sales receipts, that sort of thing. Whereas the important writings were done on some medium believed to be more permanent, probably parchment or something (I forget -- sorry, Emmett). But when the cities burned, the important writings of kings and scholars and philosophers were consumed by the flames, but the inventory lists and receipts and everyday, disposable stuff was baked into a durable form that survived down through the millennia.