To quote a video I love about pokemon (an Abridged series)-
"Every ten year old child OBVIOUSLY knows how to face the vigors of an experienced life, and should be able to leave their parents and enslave little wild animals in balls!"
1: The government would never allow kids to go out on their own. They would net them up and send them to foster homes and shelters, just like the Coast Guard with Cubans.
2: Ok, Parents aren't going to let their little joys run off at 10 yrs old with only a bag on their back and no way of supporting themselves, living off the charity of far apart, non-profit hospitals for tiny creatures in Balls.
3: You think people would actually stick to gaming rules? Castro would capture Salamence, Slaking, Tyrantitar and tons of huge, powerful pokemon and enslave the human race, not to mention that every time an ADD kid loses he'll flip out and make his pokemon attack and KILL the victor!