In our Christmas letters, it's always a wonderful life

*Sigh* Today we're reluctantly tackling a delicate subject, one that is divisive, potentially flammable and could, in fact, earn me some enemies.
I'm referring to Christmas letters.
Look, I know they're popular. In some families, writing them is a longstanding holiday tradition. They're a great way to keep up with friends and family. They're a great way to share a year's worth of experiences (and possibly a photo or two) on fancy paper.
I understand the appeal of writing them, I'm just not sure why anyone reads them.