I can't remember how old I was but it wasn't the same when I found out and I still 'believe' now if that makes sense even though I buy, wrap and store the presents lol! Even when I got my own place on my own with an ex I still put out a mince pie and milk, my poor ex had to get up in the middle of the night to take a bite out, drink the milk and fill the stockings otherwise it would've ruined my day lol! I've also told everyone that if anyone tells my LO's I will never speak to them again, I'd hate for them to find out too young, 9's a good age.