What is wrong with believing in 'the magic of Christmas?'
I think a lot of adults hate the concept of Santa because they no longer have that little kid happy feeling we get on our birthdays and special holidays. They are bitter they do not feel it.
What is that quote, "Keep Christmas in your heart all year?"
What is wrong with introducing magic/creativity to your child...Santa, the Easter Bunny, Tooth fairy, elves, whatever...
What are we--robots?
If this is an authentic thread, well, your son is a scientist (and atheist) so of course he would not like 'fantasy.'
My son is 11 and I would have him keep the 'idea' of Christmas forever, despite he is also a 'future scientist.' My husband dislikes Christmas (mainly because it is NOT like when you are a kid). I will not allow him to sour our son. I joke with my son you "MUST" believe in Santa...
I feel sorry for people who hate 'fantasy' and cannot dream...