People have children when they see a future for those children to inherit, when they can see a place in the future for their children to occupy.
People have children when they have hope and optimism, when they see their family unit benefitting more with children than without.
Put women into an environment that denies them all three of these, and despite many to most of them wishing for children at some point in their lives, most will go through extreme lengths to avoid having them.
It’s why, for example, many younger climate scientists are also forgoing children… because the emerging, pre-publish data that is not yet accessible to the public at large is absolutely horrifying, and they simply don’t want to curse their own offspring with the future that the data says we are hurtling towards.