An excellent post on the secularism and consumerism that has eaten up Christmas and simply written it off as "holiday" comes from Dymphna's Well.
I shudder to think what our more "modern" Christmas songs are telling us. "Grandma Got Run Over By a Reindeer"? "Santa Baby"? Christmas, like Christianity in general is now something to be put down and made fun of, like the picked-on kid at school.
As Boniface says, "this secular Christmas music exposes how bankrupt our culture is..."
No wonder we're depressed. If we don't celebrate the birth of Christ, we are forced to celebrate "Blatant Consumer Day", or perhaps, "Depressing Nostalgia Day", by shopping until we drop and then running to the stores the next day to take it all back, because its not what we wanted.
Boniface, btw, has an excellent post in his blog, Unam Sanctam Catholicam, which Dymphna's post attributes.
All this pretty much sums up much of what I've been trying to say all along.