I think 743 hours has got to be a record... not just for not seeing the Little Bugger, but also for total gameplay. Holy smokes! That's over 30 days of running game clock, assuming no time warping (and I know none of us EVER do that).
Yes, Gemelle, the Little Bugger will always be 5 years old. He is ageless, Peter Pan of Isola, and he gets to wear a cool costume. Maybe the other villagers in Morwen's game got jealous and fed him to the Idol? Or they gave him to the beached whale? Or he decided to live anonymously with the liitle food-stealing monkey? There are lots of possibilities....