It's as conceivable that we could adapt by making it socially and economically feasible for young women to have children at the height of their fertility, rather than normalizing surrogacy, eugenics, and mass abortion. Those things are fine in limited circumstances, of course—even if each is under legal limitations in most Western countries (I hadn't realized that surrogacy was banned in most of Western Europe https://en.wikipedia.org/wiki/Surrogacy ).