Because of a lack of education and contraception that you seem to not want to be able to provide for people. Then they have unwanted kids they cant afford or take care of, grow up in shitty homes of abuse and poverty and repeat the cycle. In developed areas where theres access to these things, its higher income families trending towards having more kids. Keep up the systematic abuse and control of worse off populations and women though with your archaic religious ideology. If women want careers its not up to some rich asshat who never had to work to decide for them

Largest economic category of people on earth are working minimum wage or less than minimum wage jobs, or are unemployed. They maaybe have a high school degree at best, but many wont. Think Third World and Developing countries, which is majority of the world. They're stuck at their dead end jobs you and I would consider slavery. These folks don't have much knowledge or access to any form of birth control. All they see growing up is big families living in small homes. Girls get married off young. Poor people are having lots of kids now cuz up until the last ~100 years, that's just what humans did for most of our specie's history as almost everyone were also poor and had to make sure there's enough offspring that survived into adulthood and helped the family out. I guess this is just a personal preference, but if I was lower class in a developing country today (which is the average person one earth), I'm saving my ass and not creating more mouths to feed. And I think that'd make most other people happier but our historical precedence is preventing our lower class to be none the wiser.

Gates-funded population control agenda fails, poverty persists, and the elite remain unscathed.