If you are a kid growing up in NJ, whether in a nice suburban area or a not-so-great circumstance, there is lots of appeal to going away for school. So I get the attraction. If you've been to some of these other campuses, the college experience is far different than at Seton Hall. It's not the right fit for everyone, and some kids want to stay home or reasonably close to home, but I think it is an overdoing it to say that so many kids make a "mistake" by going elsewhere. And not just for Seton Hall but for plenty of other places too. Some kids want to go to a campus down south or out West, away from distractions at home, with a different mix of kids from different places, to beautiful campuses with all sorts of campus life. Big football schools have that element too; if you've ever been on campus during the fall at a big-time football school, it is a pretty incredible experience.
By the way, I think the opposite is true in that some kids want to leave where they grew up and come to a place like Seton Hall, with a different environment and located reasonably close to NYC.