Previously it was a good idea to have lots of children, because they were useful as labor force for the family at countryside. Moreover, culturally speaking, it was a signal of fertility and masculinity for men to have many children. However, nowadays people are much more focused on themselves, caring little with everyone else, what includes potential children.

It's a phenomenon of our days where people are extremely egoistical and selfish. As consequence, there is little room for children...