I think a lot of people in developed countries voluntarily or involuntarily adopt a psychological willingness to not have kids and let their culture collapse because the emotional distress of a life in a post-growth world. A world where your freedoms, privacy, and economic opportunities are shrinking, to extract temporary value and stability for the upper class, out of you and your labour/compliance. The only worldly way out of it is to basically step on the others while going up to implement these changes, which feels horrible to a naturally empathic creature like man. It's a cursed state of being.