You're right, sadly a lot of people think they want children, until they have them. I don't know their true feelings of course, but Kate and Gerry remind me of other couples I've seen who wanted children to create an image of "having it all". They needed children to complete their image, just like they needed a four bedroom house, an Audi, holidays to the south of France, for the wife to always be thin and blonde. To such people, it's an affront if there's something they can't have, because they feel entitled to the perfect lives. It's about their image, more than about what happens behind closed doors.