You are kidding right? Life is about choices and living with the conscequences of those choices. Why would anyone even give it a second thought if someone switched careers at the ripe old age of say 20? I'd bet that most of the kids that go to the NBA out of high school or one year of college don't ever go back to school regardless of their success or lack thereof in the NBA. Anyone have a stat on that?
One and done or none and done, doesn't matter really as far as the impact on the individuals, but I do think that it hurts both the college game and the NBA.