Why Do You Hate LeBron James?

I have a lot of questions about the whole LeBron James Free Agent thing. Is their a place for Loyalty in sports? Is winning really the ONLY thing. Are championships the only truly important thing in professional sports? Why does everyone in the US, outside of Florida, hate LeBraon James.
From the NYTimes:
With one dramatic declaration, lasting 16 words and only a few seconds, LeBron James shook the sporting world and the N.B.A. on Thursday, announcing that he would play next season for the Miami Heat.
James, the most coveted free agent in league history, made that decision on national television at about 9:27 p.m. Eastern time, ending a frantic recruitment period that lasted eight days and involved six teams.
It was an intensely anticipated moment and an emotional one for James. He first stumbled over his words before finally declaring, "This fall, I'm going to take my talents to South Beach and join the Miami Heat."
In doing so, the 25-year-old James spurned the Cleveland Cavaliers, the only franchise he has known. A native of nearby Akron, James was a teenager when the Cavaliers made him the first pick of the draft in 2003.
James briefly became emotional when the reporter Jim Gray asked him about leaving his hometown team.
"This is tough," he said. "It's very tough, because you feel like you let a lot of people down."
James added: "I never wanted to leave Cleveland. And my heart will always be around that area." In Miami, James will join two other stars of this free-agent class, Dwyane Wade, 28, and Chris Bosh, 26, to form the most powerful threesome in the league. The Heat should become instant favorites in the Eastern Conference, joining the Boston Celtics and the Orlando Magic.
"I think the major factor, the major reason, in my decision was the best opportunity to win, and to win now and to win into the future also," James said,
James said he did not make a final decision until he woke up Thursday morning. However, by then there were widespread reports that he had chosen, or was strongly leaning toward, Miami.