I really only ever found one person I wanted to marry and I married them. We have similar tastes, we have similar values, and they challenge me at an intellectual level.
If the author feels like that is the wrong criteria - well I'm not sure what the alternative is. There just aren't a lot of other people I want to spend every waking day with.
> maddening children who kill the passion from which they emerge
Whatever ups and downs my marriage may or may not have, I would change nothing whatsoever when I look at the amazing children we have produced together.