It’s all about men.
If I worked for the Government’s behavioural science “Nudge” unit, I’d target men in the late teens / early twenties to persuade them to want children before they are thirty, within a loving, respectful and equal relationship.
My plan would be to influence young men to find a partner, commit and settle down as young as possible, with clear messaging that this is a route to happiness, as well as social wellbeing.
Indicator : more committed couples having their first child before they turn 25
Tactics : all outlined in this thread, housing, childcare, women’s rights, respect for mothers and strong role models in popular culture, community support. Realistic expectations of parenting - not aspirational. Stop people overthinking it all (see also: influence of social media).
et voila.