I believe it was a combination of things, not necessarily in order:
Family
The yips with a putter
Business interests including course design and Golf teaching
TV work
Church
Not enough time to prepare and if he could not be at his best, then he probably wasn't going to play
After all, in his prime he was the greatest with no peers!!!
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He has taken an indefinite break from golf since late November. Rumors suggest he is back in training, and may make the Tavistock Cup his comeback event.
He enjoyed watching his father play and once Tiger started playing it was clear he had natural talent and he fell in love with the game.