I agree that children generally grow out of it on their own. Of my three children, my oldest stopped at 12, my middle stopped at 11, and sadly, my youngest stopped at just before 10. Of course, my younger two were influenced by the older sib. I think with the internet, kids will begin to figure it out much earlier, but no matter what age, it is important to always focus on the magic that the season brings, along with the reason that it is celebrated. Keeping the magic alive longer than the belief in Santa is what my children, who are now 18, 15 and 12, will always remember. Every year they tell me they want it to "feel" like Christmas.