I never feel more American than when I'm arguing with an Alt-Right dipshit I'm a White dude with German/Scottish/Welsh ancestry, but have never identified as White/German/Scottish/Welsh I'm a fucking American If you need a larger sense of belonging than that join a book club
Yeah, that's probably a big part of it. My experience of never feeling like that stuff mattered probably makes me an outlier.
I just feel like there are better things to identify with than "our ancestors came from the same place". 