It's a fascinating decision for UNC, which I think probably has as much if not more appreciation for the ACC than any other member and all things being equal I'm sure has absolutely no desire to blow it up, but also wants to compete at the highest level and probably has the luxury of being able to choose where it plays.
So does it stick with the ACC, which probably allows the conference to maintain its existence in some form, out of appreciation for the history, geographic rivalries, and UNC's place as sort of the top dog in the conference, even if it means it's playing in a 2nd Tier league?
Or does it jump to the Big 10 or SEC, where it will be in the 1st Tier, but it destroys the historical ACC, loses it natural rivals and plays a bunch of games against Minnesota or Ole Miss, and is no longer top dog in the conference?
I mean, obviously I hope they stick with the ACC (even though, to be clear, I hate UNC sports with the passion of a thousand burning suns), but I also get why they might decide to "save themselves" by jumping. That's a really tough call, and there are a whole lot of UNC fans out there who care about their sports other than football.