I hadn't really noticed it until I took down this year's collection of Christmas cards. Whereas most of the cards we use to get were divided into two categories - traditional religious themes, or funny, this year we saw a distinct change. Those earlier categories were literally wiped out by family photos; notably children. A stunning 60% of the cards we got showed photos of the family, or more likely the kids.
The good news is that we only got one yearly family 'highlights' biography and it was in rhyme so we couldn't really make sense of it.
Guess the next change will come in a decade when all those kids have moved on to college, or beyond.