One and done's are killing anything, but it certainly is not helping. I'd say it is hurting, but there are multiple other factors that are hurting college basketball much more.

1. TV Timeouts-The stupidest thing ever created. Is it a basketball game, or an advertisement contest?

2. Reffing- Impossible to have consistency, but need to revise some rules...IE going strait up and having someone run into you is not a foul.

One and dones are a detriment. For the players themselves, alot of them are not ready for the next level. They go to europe or flame out, which isn't necessarily a bad thing, but if they had stayed and developed, they might actually become NBA caliber players.

Continuity. For the fans, it is a huge deal. Christian Laettner was hated because he kept coming back and winning. Fans love something to hate. He also graduated from Duke, making him an alum. I realize some of these players are good, but they get recognition based upon a school that they barely attended. I went to Yale for a summer camp once, doesn't mean I get to attach Yale like I graduated from there.

Spread the wealth- Imagine a world where Devin Booker came to Mizzou, Trey Lyles goes to Georgia, and KAT heads to Florida. It would up the overall game of college basketball and the SEC in general. Imagine even further if they stayed for 3 or 4 seasons. The amount of talent would be ridiculous. Imagine if Bill Gates gave even half of his money to 100 strangers. Sure, some of the money would go to waste, but overall, likely more peoples lives would be improved.

kU might be mizzou's rival, but the stories from players make the difference. I remember matchups with Nick Collison and Kirk Hinrich year after year. Sure they won on most occasions, but that is what it is all about. School and state pride. That is what college basketball is truly about. Not just the NCAA tournament.