I don't think there's any harm at all in allowing a kid to fantasize. In fact, I think to stop people from fantasizing is a very destructive thing indeed.
J. K. RowlingThey were bullyin' him, Hermione, 'cause he's so small!" said Hagrid. "Small?" said Hermione. "Small?" "Hermione, I couldn't leave him," said Hagrid, tears now trickling down his bruised face into his beard. "See -- he's my brother!
J. K. RowlingThis exchange marked the beginning of Mr. Malfoy's long campaign to have me removed from my post as headmaster of Hogwarts, and of mine to have him removed from his position as Lord Voldemort's Favorite Death Eater. My response prompted several further letters from Mr. Malfoy, but as they consisted mainly of opprobrious remarks on my sanity, parentage, and hygiene, their relevance to this commentary is remote.
J. K. RowlingHarry was speeding toward the ground when the crowd saw him clap his hand to his mouth as though he was going to be sick-he hit the field on all fours-coughed-and something gold fell into his hand. 'I've got the snitch!' he shouted, waving it above his head, and the game ended in complete confusion. 'He didn't catch it, he nearly swalloed it,' Flint was still howling twenty minutes later, but it made no difference-Harry hadn't broken any rules and Lee Jordan was still happily shouting the results-Gryffindor had won by 170 points to 60.
J. K. Rowling