Most people don’t measure out futuristic measurements for society to get to before they feel comfortable having kids. Plus they will be at a different place and time, so things may change for them to be more comfortable. Reproducing isn’t the top priority for them, surviving is. It’s like Maslow’s hierarchy of needs. After the basic needs are met, they will have more energy to focus on kids.

I’m in my 40s and still don’t want kids, so I doubt that will change. The people I know that are young (teens and early 20s) might change their mind, but they aren’t lining up to have kids now. Some seem open to changing their minds later, but most of them say probably not.