I see no difference between organised religion and a cult. Catholicism, for example, is just a ghastly death cult that went global. Like all cults, the people involved want more followers. The more children its followers have, the more chance there is of the cult surviving.
Contraception has done more to reduce human misery and suffering than anything I can think of. It has also done more for women’s rights than all the feminist articles ever published. The Bible and the Koran are hideous, Bronze Age texts which view women as cattle - i.e there to breed. When a woman has only one or two kids, she is able to save money, educate herself, pursue a career, etc. When she has six, and lives in a filthy hovel, she is too ignorant and poor to assert herself, which is how the priests and Mullahs want her to be.
Also, the world is insanely overpopulated. In 1800, there were a billion people on earth. By 1960 that had tripled to three billion. By 2000 it had doubled to six billion. We’re now at eight billion and heading for ten - in a world of declining fish stocks, peak oil, mass extinction and climate change!!! It is utter madness. Unfortunately, any attempt to reduce the world’s population is always hampered by the religious.
If I was a billionaire, I would build a family planning clinic in every village on earth. It would do more to reduce suffering than any other single act.