There are lots of reasons. Here are the best ones:
1. We had one of those Super Busy Holidays. I mean, the kind where we still feel a bit hung over from it.
2. I was reading these great books I got for Christmas:
Byron in Love by Edna O'Brien and -
The Varieties of Scientific Experience by Carl Sagan. OK. Neither of these pictures represents the actual book covers, but they show is pretty.
3. We got so sick as to be bedridden. For two days.