This paragraph from Tim Challies' recent Merry Christmas post captures the twinge of sadness that comes from watching your kids grow up and lose some of that youthful enthusiasm really well.
I know I’m mostly waiting in vain, though, because I know those days have passed. In previous years the Christmas Eve discussion was, “How early can we get up?” This year it was, “How late can we sleep in?” It’s a funny thing to see your children grow up and to remember the way things used to be. It’s a funny thing to have to begin to create a new normal, to make old, comfortable traditions fit a new, less-comfortable context. I liked the way things were. But I think I like the way things are, as well. At least, I can come to like it.