Distalgia

A feeling of longing or nostalgia for something that has never existed and/or could never exist in the first place.

I feel distalgia when I listen to old bands, even though I wasn't alive when they were popular.

I felt distalgic in an old style coffee shop, though I'd never been to one before.

I feel distalgia when I think of a life in the country, but I have never lived far from a city.

Distalgia

Distalgia
Noun
The sensation of revisiting a work of media, place, or other nostalgic object, and realizing now that you like it much less than you remembered.

Man, I've got such distalgia for the sitcom FRIENDS. I loved it as a kid, but it's complete garbage if you watch it today.