It's funny how you're worried about fertility rates while earth's population is 7.5 billion people. Maybe all innovations and "negative" changes are just a natural way to protect the Earth from overpopulation.
What bothers me is the fact that the educated and the intelligent are not having children, while the least educated and the retards are having dozens. For example, people with the highest IQ can be found in East Asia, and they have the lowest fertility rates. On the other hand, Sub Saharan Africans, who normally have an IQ of less than 70 are having the highest fertility rates.
Because less educated people do not think about how to provide and raise a child, they are very selfish and behave almost like animals.