I generally just tune in for Texas Tech games (spotty with their games also), and the occasional big game featuring top draft prospects. As others have said, the quality of teams are just way down with the "one-and-done" rule. Any identity a team establishes, changes every year now also. Programs look so different year to year. Spend way more time reading about the prospects than I do actually watching them...
March Madness can still be fun, but my passion for college basketball has fallen off. Last time I can remember being really in to a season was the Derrick Rose Memphis team vs. Kansas.