I've taken all the dec's down today as I noticed a few others have too. In fact I have taken them down before the DS's go back to school most years. However I'm sure I remember everyone having to remind each other that Christmas decorations had to come down when I was younger. All that stuff about it being unlucky to keep them up and I remember others saying how they didn't care because they liked them up etc.
How long is normal now to keep them up?