Didn’t select kids as extremely or very important.

Presumably there are seven choices:

• extremely important
• very imp
• imp
• ambivalent
• unimp
• very unimp
• extremely unimp

The data is reporting the tail

I imagine a lot of this could be explained by population growth, and physical and social mobility. There are flat out more people around so it’s easier to find a partner you don’t hate. There are also more people who are socially acceptable and accessible.