I reckon 85% of Christmas is down to women making it special. Traditions, decorations, meals, gifts. The planning, having to think of everyone, the organising of when gifts go to people, shopping for gifts and food and alcohol, sending cards, cooking a massive roast meal on the day, wrapping gifts.
I have a good DH but he's pretty rubbish at these things. He does more housework than I do but the planning and organising is not his thing at all.
If women did nothing at this time of year it would be shit show wouldn't it?