The practical consequence is simple: by 2100 religion won't run laws, schools, or daily life. It'll be a hobby. My opponent says religion adapts, but adapting is what shrinking institutions do on the way out. The demographic argument cuts both ways: fertility in religious regions falls as education and prosperity rise. And meaning, community, mortality? Secular life answers those too, through civic groups, therapy, and shared purpose. Religion surviving as private nostalgia is not permanence. It is marginalization. That is disappearance as a social force, and that is what matters.