This text analyzes the specific process of the crisis and decline of religion in Europe and other regions deeply influenced by European tradition. The author argues that this phenomenon is not merely a temporary wave of diminishing religiosity but represents an active and rational overcoming of religious structures from both internal and external perspectives. The study focuses on the semantic ambiguity of the terms religion and religiosity in the modern context, highlighting their strong affective connotations that transcend simple terminological agreements. A unique feature of the European situation is the historical dominance of Christianity, characterized here as a "religion-non-religion" of non-European origin. While Europe was historically homogeneous within the Christian paradigm, recent times have seen the emergence of various religious fragments from other cultures. The reflection thus raises fundamental questions about the nature of European identity concerning faith and reason throughout the modernization process.