It occurs to me that decorating for Christmas is a lot like sex for middle-aged women. Sometimes you're tired and not in the mood. But, someone else thinks it's high time, so you bite the bullet and get started, hopefully after a glass of Shiraz or a nice foot rub. (Am I right, ladies?)
Somewhere in the process, something switches on and you start to really enjoy it. You remember how much fun it is, and the end result is spectacular! When it's over, you're exhausted and gratified in the lovely afterglow.
Then, you find yourself craving a cigarette, tho' you haven't smoked in over 30 years. So, you settle instead for a nap.