Pretty damning article from the Times comparing Dirk Nowitzki and Lebron James. This passage says it all.
"In the free-agent frenzy of 2010, Nowitzki, without much fanfare, decided to remain with the franchise that first signed him and for whom he has toiled for 13 seasons. He re-signed with the Mavericks, he told reporters Monday, because “ultimately, that was where my heart was at.”
He added, “It almost felt like we had unfinished business.”