There's quotes "More child, many fortunes".
But, it was correct before 2000's, now having many child is really a disastrous because life getting hard.
I beg to differ and I want to say this thinking is not correct forever, not only before or after 2000s.
If you are poor, you and your family are more probably have bad financial status that makes it's harder to nurture your children and more troubles to provide them good chance in education.
Nurturing children is more easily than educating them but even the easier part, nurturing children is already problem with poor family. If they care about their children, future of children, they will not let their sexual demand to affect their children future and will self-limit total children they want to have. There are many ways for family planning and parents only need to have right attitude to do that properly.