I remember having a conversation with a friend when she was trying to get pregnant, and she told me: "I think part of wanting a child is simply that life feels boring now. I go to work, I go on holiday, I do the gardening... can I really just do that for the next 40-50 years?" For her, she couldn't imagine that, and having a child represented something to work on and a focus for her life that felt missing otherwise.
Which might sound sad in some ways, but I think we all make choices about how we want to make our lives feel purposeful and important.
Once you have a kid, that choice is kind of irreversibly made for you, whereas if you choose not to, the question stays alive in a more moment-to-moment way.
It's a game of 'And now what? And NOW what?' that is less present for women with kids, because the 'what' is led by your children.
So maybe this is less about 'child free women have to justify their existence in other ways because they're missing something' and more about 'how do we all, as human beings, create a sense of meaning and focus in our lives?'
So for Emma Gannon (the writer - who actually has done a lot of writing on this topic in some very thoughtful and honest ways), it's through goals and milestones, things to work toward and look forward to – for others, like some PPs, it's more small lifestyle things, 'bimbling' (love that word) along, changing course on a regular basis. Either is fine, just like choosing to have a child or not is fine.
It's possible to know that you are enough just as you are, and still want to explore a sense of purpose and meaning over and above that – and I think we're allowed to ask those questions as CF women as much as we're allowed to not do so.