Accidental adventures may be exciting, but they're also a real pain in the butt.
Dogget Mann would never have run away from his group home if he'd known what it would lead to. Sure, he's interested in science and adventure more than your average eleven year old boy, but that doesn't mean he's eager to be mysteriously transported two thousand years into the future with little to no chance of returning home. And even though he lost his mom and dad two years earlier, he's not quite ready for a floating ball of a robot and a one hundred and sixty nine year old scientist/inventor to become his surrogate parents. Look, is anyone fully prepared to be chased around the solar system by a bunch of genetically engineered thugs and high-tech security forces?
He's just a kid, for crying out loud!
In some other universe they found a cylinder on the moon. Inside it was the story of a boy who just wants to be in the right place at the right time.