'Finally having kids' (Mark Makela/Getty Images)

The last time I travelled on the London Underground, I had our Labrador, Saffy, with me. Britain is a nation of dog lovers, but I was still surprised by how many strangers cooed over her. It was startling, in fact, compared to my recollections of travelling on the Tube with a baby in a pushchair a few years back. No contest: Saffy got more love.
So the ad I spotted in that Tube carriage, for the dating app Tinder, seemed particularly fitting. It depicted a smiling young couple in psychedelic clothing, with the caption: “Finally Having Kids”. They each rest one hand on a pushchair. In the pushchair is a dog.
If, given my recent experience, Londoners seem more partial to dogs than kids, this may not be the only way in which “fur babies” are on the up. According to last year’s ONS data, half of British women now reach 30 without having kids. And Pets At Home CEO Lyssa McGowen thinks some of these have redirected their caring urges toward pets. “They are taking all that time and energy and attention and putting it into fur babies, especially in urban areas,” she said.
McGowen speculates that this is happening because the classic milestones of adult life — such as getting your own place — seem increasingly out of reach to many, thanks to scarce housing, rising costs and stagnant wages. This feels plausible: in the US, studies show the stated desire for family size has remained consistent even as the birth rate has fallen. And one recent UK-based Rolling Stone investigation quoted many young couples for whom money is indeed the sticking point.
But is that all there is to it? Prospects for Gen Z are not as optimistic as for their Boomer grandparents, but in absolute terms human societies have lived through greater turbulence and gone on having kids. Birth rates remain buoyant, for example, in the Democratic Republic of Congo, which consistently makes the top 10 in the Fragile States Index of most unstable countries. So what else is in the mix?
Liberal feminist Jill Filipovic argues that if more women are opting to have fewer or no kids, it isn’t so much about the financial pinch. Certainly, among dog-walking acquaintances locally, I can think of several childless, younger millennial heterosexual couples who seem, on the face of it, pretty sorted: good jobs, comfortably off, often homeowners, sometimes even working flexibly from home. Ideally situated, in other words, for starting a family. And yet, they have no kids. For some in this situation, the dog is an object of minute, loving observation and care, and plays the central role in conversation that children usually do for young parents. Watching this, my sense is that although for some economics is a factor in choosing between human babies and the fur variety, at least some of the time it’s not just about money. It goes, rather, to the heart of what we think the purpose of life is — and thus what we are.
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