As I implied in my response to Metatone, I like the fact that (at least where I live) there is a shared humanity inspired by those of us who share Christmas.

I agree that Santa doesn't exist for the majority of the people on this planet.  It is a struggle to know how to deal with this reality with our children.  I  think that it is important to provide a childhood with optimism, wonder and hope.  At the same time, we talk a bit about the reality for the majority on the planet.

My partner sponsors a girl in Bangladesh, and I assist with the mentoring of a schoolgirl in Australia.  I'd like to think that our daughters can find some understanding about and connection to them.