I saw from various reports that the birth rate in Europe is very low, which is absolutely negligible compared to countries like ours. I have even seen negative birth rates in some countries, which I find very sad. However, I am speaking from a personal perspective, having two children and from there, having children is very enjoyable and it brings a different pace to life. I think it can cause a kind of anxiety and loneliness among those who do not have children, as well as a lot of trouble. Children are one of the gifts of Allah to us, so we should all accept it.
It is interesting, as two children is rare now, but even two is not enough to replace a population. It requires about 2.4.