On the flip side, there are plenty of 12-year olds who think it's ridiculous that they can't go down to Wal-Mart and purchase a firearm on their own. While that particular child's parent might believe that his son is perfectly capable of owning and carrying a firearm, society has determined that he's too young to handle that kind of responsibility.
Similarly, there are organizations who believe that a 10-year old is ill-equipped to handle the responsibilities of being a Black Belt. And personally, if I'm going to award someone a Black Belt, it's because they've demonstrated that they can effectively defend themselves. Not just remember their katas and their one-steps; not just come to class with a good attitude; not just make their tuition payments; not just being able to be a good point-fighter.
So while there are instructors who believe that 10-year olds make great Black Belts, the reality is that said 10-year old is in for a rude awakening should she ever have to defend herself against a real attacker.
QFT!!!! My thoughts exactly!