Drawing from 1.7 million Gallup surveys collected between 2008 and 2012, researchers Angus Deaton and Arthur Stone found that parents with children at home age fifteen or younger experience more highs, as well as more lows, than those without children... And when researchers bother to ask questions of a more existential nature, they find that parents report greater feelings of meaning and reward -- which to many parents is what the entire shebang is about.

Your children are going through life with their eyes closed, so YOU'RE the one who has to steer.

The author observes the shift now that children are not a source of labor for the family, that they have gone from employees of the parents to the bosses of the parents.

But the truth is, there's little even the most organized people can do to prepare themselves for having children. They can buy all the books, observe friends and relations, review their own memories of childhood. But the distance between those proxy experiences and the real thing, ultimately, can be measured in light-years.