Single all my life so I could come and go as I please, now choose to spend my last years raising a unique and exceptional young man.... I understand those who chose not to have children as I was that person until 4 years ago... Hats off to us all and our ability to choose...
Competence does correlate with education in advanced country. Intelligence does not. There was a movie, Idiocracy, that makes your point about diminishing intelligence a low ferrtility in educated classes. But it is situated entirely in the U.S.A.
Don't worry guy's I'm sure by the time you reach old age those missing children will be replaced by robot's. There's only one ingredient missing from the equation, love. ( have you hugged someone today ? ) Oh I nearly forgot, social distancing.......now that's one more reason for a decline in population!