The real christian Holiday anyway is Easter (well, its the biggest one), I think the commercialization of that Easter should stop, because commercializing Easter is just stupid, festive treats like Cadbury eggs is alright, but the Easter bunny must die.
I think Christmas should be somewhat less commercialized, so its more tasteful.
It isn't even the birthday of Jesus, its Sol-invictus's. But that is no longer relevant.