The problem with that argument is that I don't assume people have no memories. They may have perfect memories. They may be completely unaltered. Nostalgia does not alter memories, it alters perception on the memories.
For example, for me Elwynn Forest is completely unaltered from the first time I rolled a female human mage and immersed in a beautiful fantasy world with beautiful music and sounds and images. I have forgotten nothing about it and it's almost unaltered and it's as I remembered it, and even if it's altered I would have the same opinion if it wasn't.
But the point is, I do not see it that way anymore. I grew out of it. I think of it more like graphics right now rather than a beautiful magical place. I've grown up for this game and I currently don't see the same beauty I saw, I saw a different kind of beauty.
Currently I'm mainly interested raid organization and game efficiency in general. Do I remember exactly the same game (even in the assumption it was unaltered)? Certainly. But do I see the same "beauty" and excitement on the things that might be unaltered and as I remember them? Certainly not. People grow out of things. The grow up. The seek new experiences. They mature out of their past excitement. It's not kansas anymore.