I love this little passage;
(from Chesterton's The Everlasting Man)
The Christ child, in a way unique among the world's religions, gives warmth to the idea of Winter. In the bleakest, darkest time of year, His cradle is the hearth-fire around which may gather all people of goodwill.
The secular trappings can be fun and even spiritually profitable for one who carries that fire in his heart, but they fail as a substitute... like gathering around the picture of a fire. You might find a very good picture on some wide-screen, high-definition television... but try roasting marshmallows by it, or warming your hands.
This is, I think, partly what irritates some irreligious folk about the holy days. Our claim to have a real fire, with real warmth, and our invitation to gather around it are to them infuriatingly condescending, so they stay rooted in front of their picture-fire, just to show us. "Too good to stand here with me, eh? Think my picture is no good, eh? Snobs. I'd sooner stand here in the cold than give you the satisfaction.".