Duke is hated because they are so successful in attracting recruits, winning games and championships, filling their 'hallowed' arena; all on a regular basis.
Jealousy might be the right word to describe the reason.
People love to hate Duke..as simple as that. And I'm one of them :)
Duke well and truly deserved it. I was rooting for Butler all through, but I'm not pissed at Duke winning it.
Had it been against us, I would have felt that all the calls were going in favor of Duke. But since I didn't have that 'ulterior' motive, I felt that the refs were pretty impartial.