> I've never understood why people put eggs in stuffing.

I'll usually put one egg in my stuffing as a binding agent, like putting an egg in meatloaf. I'm a transplanted Yankee who lives in the south, but one thing a lot of southerners do (and they only do this with dressing, not for stuffing, for show I guess) is they will slice a hard boiled egg and lay it across the top of the dressing right before the casserole goes in the oven. I've never tried doing that myself, but I've been to plenty of other people's houses for Thanksgiving and many of them do that. It's a southern thing.