Here's the thing, I think we need to listen to the words he used. He said he's okay with not playing with his son. He said the game isn't fun for him if he's not playing in The Finals...
He'd be trying to play forever if he based his decision on him still being a good player. Its time to move on. There's nothing left to prove here. He's as big a winner as The Game as ever had, as he's won in more than one place, with more than one coach, with more than one style of play/philosophy and team around him, in both conferences...
Let these young dudes have it. All the pessimistic cats in here are generally people who don't like Bron anyway, it's not a shocker that someone 20 years into their career is thinking of moving on...
I'd be willing to bet that sometime before the new season starts in 4½ months, we'll hear him announce that Y21 is his final year. I'm betting on that right now. He probably does want The Farewell Tour, lesser players have gotten one. He deserves his and so does The League...
He'll announce it some time before the season starts that this is it. Good for him. Let these young boys have it!