He's not immature. He's just egocentric. That's not going to abate with time. By all other accounts, this is a guy with his head screwed on reasonably straight. He just has an ego that's about as outsized as can be.
What I'd love is for him to announce that he's going to Cleveland, then mid-way through his interview, Jim Ross arrives out of nowhere as some ominous music plays. Ross proceeds to yell "What the hell is this???? That's PAT RILEY'S MUSIC! NOOOOOOO!!!!" and then you see Riley, Wade and Bosh arrive as James rips off his Cavs jersey to reveal his Heat jersey.
It could happen.
/Mr Pryck
eh hem...
all of this makes it so that if he does decide to go to new york all the more "shocking" for ESPN to report. i may be stealing from the sports guy now, but it's as if ESPN has hired vince mcmahon and good ole' JR to make their storylines now. "OH MY GOD! OH MY GOD! THAT'S LEBRON'S MUSIC!! HE... HE'S WEARING A KNICKS JERSEY!!! WHO WOULDA THUNK IT!"
the WWE angle has already been used in this thread already, thank you very much.