“Today... we see a form of selfishness. We see that some people do not want to have a child,” Pope Francis said.
— The Telegraph (@Telegraph) January 5, 2022
“Sometimes they have one, and that's it, but they have dogs and cats that take the place of children. This may make people laugh but it is a reality."
The Pope is talking absolute bollocks, people have the right not to have children (eg he hasn't got any children).
It is not an act of selfishness.