I definitely do the lion's share of Xmas prep, but part of that is because I love it. DH is much more of a last minute, buy whatever is on their wish list kind of person, whereas I like to plan quite a far way in advance, start thinking of ideas for things in the summer and start a little list that I keep going. Ideally, my shopping would be done by the end of November, to allow December to attend all the various events that would normally be on, do Xmas cards, plan the food etc, but I usually don't quite manage it (especially if I then get a mid-late December request from a child!!).
Because of fewer events this year, it does mean I've had a bit more time to really enjoy the planning (even baked a load of Xmas biscuits yesterday
, and hand printed our Xmas cards this year - actually DD did the hard work, I just wrote the messages inside).
DH is perfectly capable, but Xmas would be very predictable, a last minute rush, and an 'it'll do' type of affair, whereas I want it to be beautiful, not rushed, and filled with love.
Giving myself lots and lots of time has been the key. Oh and DH does everything to do with his side of the family (although I was kind this year and did his cards), as they do Xmas very differently - strict purchasing lists, strict budgets, strict timetables, stressy cooking. I prefer things a bit more fluid and chilled.