Yeah yeah, Christmas is the season to be jolly with others, sharing, partying, pleasantries etc, but I think there would be a higher proportion of people happy if we just fucked everyone else off on the 'big day' and stopped at home with our immediate families doing not much.
Of course you might enjoy spending your time with your nearest and dearest family and friends, but I'm sure if this is the case you wouldn't mind letting the norm do an about turn so everyone else can stop pretending they're having a good time with whinging/farting PIL/Mums and Dads/DSis/DB/SIL/BIL/BILs nerdy train spotting convos?
Get up with your own DC, open your pressies when you want, mong out all day in comfy clothes and your fave tipple/munchies, leisurely ply DH/DP with alcohol whilst he's cooking, snooze after dinner, bed after a couple of crappy films - what more could you want?