In no particular order, I have French, German, Dutch, Scottish, Irish, and a teensy tiny bit of “my great great great great grandmother was native American and we actually have the proof but nobody could ever tell without a DNA test so it only gets brought up when talking about obscure family genetic lineage”

Maybe it’s because my family is super midwest-usa-bible-belt, and I never even found out about most of it until a genetics test when I got married to my now wife (we wanted to know if kids would even be a medical possibility with our various issues), but I don’t identify with any of the places my ancestors lived in, so there isn’t a particular culture I’d like to be part of. And to be perfectly frank I’m not sure I want to be part of any culture, I just want to tend to my forest with fair Goldberry my wife.

You do make a good point though, if you’re looking to be part of something or feel particularly drawn to a culture after being immersed in what you think it’s really like, I could absolutely see this happening with 100% sincerity.