I think why we care about that is because it is a common-sense connection to assume (a dangerous word, I know) that when we moved up to a better conference, we did so to make the NCAA tournament more often... and when we signed a coach to a $12M contract, we did so to make the NCAA tournament more often...and when we renovated the Robins Center, we did so to help make the NCAA tournament more often... and when we started chartering all our flights, we did so at least in part to put ourselves in a better position to make the NCAA tournament more often.
Making the NCAA tournament is not only a great accomplishment, it is also a very financially rewarding one. And even for a well-endowed school, our athletic department operates on a budget. It doesn't make sense to spend a lot of money just for the sake of spending it – with no hope of making money and achieving greater success.
Is it possible that we made all these financial investments solely with the goal of building a recognizable program that made money through ticket sales with no concern given to whether we win or lose or ever make another NCAA tournament? Of course it's possible. But it would seem highly unlikely, and quite frankly, stupid were that the case.