Today's world is just too exciting and there is too much to do, so I agree that ...

Today's world is just too exciting and there is too much to do, so I agree that kids are pretty low on a list of priorities for a lot of people.

Also for the record, in the US the birth rate per woman was below 2.1 for about 50 years.

So this is not really a new problem, it's just that there were enough young people back in the day and people didn't have the same life expectancy.