People trying to out-cunt each other about santa and 10 year olds!
Perfectly put, MadMags.
My 10 year old's IQ is also fine, thanking you muchly. What a nasty thing to say. People all have their own ways of doing things, and I think it's horrible for anyone to be so judgemental about a child's belief. And a 10 year old is still a child, despite the weird ideas floating about this site at times which indicate any child over the age of 8 should be suited, booted and off to conquer the world as fledgling adults already 
My DD (10.4 years) still loves make-believe, playing with her dolls, dressing up, inventing games, talking away to herself in whatever fantasyland she's imagined up, and yes, she still gets excited about Father Christmas! There is nothing wrong with that. She's a child and I'm perfectly happy for her to remain a child as long as she wants. I let my DD lead herself and outgrow things naturally. I don't understand this forced need to cut childhood short at whatever age an adult deems it necessary, because, 'Oh, they're getting a bit old for it now, surely?' Why? Just let them be. They've got all the time in the world to play adult and figure out life can be super crappy.
If you do the Santa thing, great. If you don't, great. To each their own. If your kid figures out Santa isn't real at 4, fine. If they figure it out at 12, fine. Whatever the case, we're all different. But can we stop using those differences to bloody point score? As if you call into question a child's IQ/abilities/whatever because of a belief in Santa. Jesus wept. This site puggles me at times!