Bart Simpson is 10years old. He has always been that age, always will be and always must be. If he grew up, who else would speak for, suffer for, get revenge for and say "Eat my shorts" for every little boy in America?
Bart faces up to the challenges of 2020s childhood as he once did to 1990s. He does the things real kids wish they had the nerve to do, takes his lumps and bounces back He does this so that the real kids don't have to. We know who Bart will be when he grows up - he'll be Homer and Homer will be Abe. So why bother going through the rigmarole?