We’re sitting at the kitchen island for an after-school snack, and my kids regale me with tales of their day. The epic plays during phys ed. The funny thing their teacher said. What they love—and don’t love—about their new seating arrangement. More commentary on the big moments from their intramural volleyball game. (I’m pretty sure he’s destined for sports broadcasting.) As I slice veggies and prep supper, I listen and laugh. When they’re finished, I say, “Hey guys, before you go out to...