@Blackberry I’m not sure what you’re getting out. One can be grateful for what one has without thanking any entity for it. One could thank life or circumstance or that one’s hard work has paid off. Or just be thankful in general.
As you know, God is a man-made concept, anyway. People’s ideas of God reside solely in their own heads, and no one has any access to anyone else’s idea of God, save through what they say (testimony). We know that testimony can be highly unreliable.
So when people thank God, they are thanking an idea they have, and who knows what that idea is? Essentially, though, I would argue that they are thanking themselves, only they are projecting that self-thanking to something outside themselves. It gives them comfort to think that something outside them looks on them kindly, instead of depending solely on their own devices to get anything in the world.
Really, in effect, it doesn’t matter if your thankfulness is generic or towards some idea of a God. It’s all a feeling, and, I think research shows, a useful feeling. Gratefulness helps us attain better mental health. A holiday (holy day) dedicated to some idea or another, helps remind us to be thankful. Or grateful. In this process we are doing something beneficial.
Christmas has another spirit. It’s about us all being in this together. It’s about sharing the pain and in doing so, helping each other, raising our spirits, and actually doing good for the community. Spending, of course, plays a key role in helping the community and this year, more than most years, we need strong spending to goose the economy. A goosed economy helps us all.
Christmas is also about fighting SAD (seasonal affective disorder). By coming together with others at a dark time of year, we boost our spirits and keep depression at bay, somewhat. There are deep socio-psychological reasons why we have holidays that most people probably don’t see or think about. But they work whether or not people understand what is going on. People can rail against materialism even though materialistic things are exactly what are being exchanged or given when we help the poor and homeless. We can’t live without material things and material things are not bad. An improved economy is what we all need and as such, purchasing and giving is fully in the Christmas spirit.