most people aren't afraid of having children, they are busy trying to survive and build wealth, by the time they have a house and decent job they are much older and still struggling, most can't understand why they are struggling and think of they work harder and longer they will be able to afford children, eventually it hits them that they will never be able to afford children and by then they are tired or divorced or something,
majority are not afraid, they do want to build a family and good life.