Forgive my American-ness (and I remember when the EU didn't exist) but the EU is relatively "new" in history, wasn't it signed into force in 1993? Like, a little more than 20 years ago? Somehow I think, like, a year from now, people will forget this even happened.
I mean, this isn't as big as, say, leaving NATO or something. I think it comes down to what it represents more than what it actually is?