I remember when I was a kid, I didn't like Christmas, I think I felt performance anxiety! I didn't much care for presents or the paraphenalia, and never looked forward to posing (happily) for the camera... or, especially, opening gifts and trying to put on the happy-look-what-I-got face. I was too concerned for making people see I was happy, rather than my normal moody-kiddy self.
Sam always found it boring. Spending the whole day being nice, quite an effort sometimes!
Now Christmas is much more fun, relaxed, peaceful, silly and lazy!