Depopulation and demographic decline in mountain villages have been ongoing for decades, with no signs of reversal in many countries. This process threatens not only local economies but also the preservation of unique cultural traditions, customs, and heritage. However, revitalization efforts face a fundamental challenge—bringing life back to these villages requires people, yet the absence of a resident population makes sustainable recovery difficult. Economic and infrastructural investments are necessary, as well as the adaptation of the development model for service provision. However, with limited resources, strategic decision-making is crucial to ensure efficiency and sustainability. This paper explores the need for clear criteria to prioritize investments in mountain villages, balancing the desire to preserve cultural heritage with the reality of demographic trends in the example of Serbia. Should all villages be supported equally, or is it necessary to identify those with the greatest potential for sustainable revitalization? Where do we draw the line between investing in renewal and accepting the natural decline of some settlements? By proposing a framework for prioritization, this research aims to guide policymakers in making informed, data-driven decisions while opening a broader discussion on the ethical and practical implications of choosing which villages to save and which to let disappear.