If he wins more rings in Miami Heat and I don't think the Cavs will.
1. he left Cleveland (Lebron's home state)
2. he broke his promise to bring a championship to Cavs, he said, "I will bring a championship to the city of Cleveland before I retire"
3. he went on national TV and boasted about his talent instead of a humble signing, He also didn't tell the Cavs before his decision he was going to leave. Team had to rebuild.
I don't think the Cavs fans want to forget that.