Back in the 80s and 90s I loved both college basketball and football. I not only watched all UNC games but on weekends would watch non-UNC basketball games as I was able (especially ACC games on the old Jefferson-Pilot/Raycom network) and enjoyed them. In the 21st Century, with the advent of one-and-done and now easy transfer/paying players my interest just keeps waning. I still watch most UNC games (but not all anymore), but I rarely care to watch any non-UNC basketball games in any conference, including most non-UNC NCAA tourney games.
And mainly it's because, as others have already said, I miss the days of being able to watch players develop over the three or four years they stay at UNC. I still remember watching Warren Martin go from a bench warmer to a significant contributor and seeing that growth over time was one of the main pleasures of the college game. I just get the sense that more and more of it today is just hired guns playing for money and not the team or school, and for bench players they no longer stay in most cases but just transfer out. And I'm well aware that paying players and allowing people like Lubin or Cadeau a chance to shine somewhere else may be more fair, but watching teams of mostly mercenaries that you know will mostly be gone after one season just isn't the same. I know I'm an old fart and that bigs may be right that the college game is as popular as ever, but I don't really care to be honest. For me personally the emotional investment in the team and players just isn't what it was, although to be fair maybe that comes with age and some cynicism about how the world works. I do still hate dook and state with a passion, though.