Some flavors of Christianity keep it until January 18th, I think. There's laziness, too, I suppose. I'll actually be putting up Christmas lights the week after next because screw being out in the cold for hours at a time. Unfortunately, while it is fairly warm where we live, it shifts overnight into low-mid 30s at night and highs of low 50s during the day almost within a 72 hour time period. I'm getting a shipment of aged wood later this week for fireplace use (and BBQ).