One interesting thing about birthrates that I think most people haven't really looked at is the data segregated by age groups.
In most countries with falling birthrates (save some exceptions like Japan) a huge part of this decrease is in the 15-25 age group. There is usually also a decline in the 25-29 but there's an increase or the same rates as we've had historically on the 30+ range.
What this mean is basically that we've eradicated teen pregnancy, and that's definitely something desirable in a developed society.
In most countries with falling birthrates (save some exceptions like Japan) a huge part of this decrease is in the 15-25 age group. There is usually also a decline in the 25-29 but there's an increase or the same rates as we've had historically on the 30+ range.
What this mean is basically that we've eradicated teen pregnancy, and that's definitely something desirable in a developed society.