"What comes next" is the standard set of parenting stories that have been told and retold a million times. I made it through Drew & his wife can't sleep because the new baby wakes up a lot and through Trick-or-treating for the first time and ballet school for the first time before giving up. The essays might as well have been computer-generated: new dads miss partying. Moms are great at crafts. Little kids wear cute costumes and get into princesses even though their parents didn't want them to!
Magary subtitles the book "A Memoir Of Twenty-First Century Parenthood" but there's nothing here that's particularly 21st century, or worthwhile.
I skipped ahead to find out how the surgery went. He survived. Now you don't have to read the book.