This chapter outlines the macroenvironmental consequences arising from a hypothetical universal adoption of reduced consumption as done in minimalistic consumption. Such a systemic shift would fundamentally challenge the prevailing economic model of infinite growth. Drawing on academic literature concerning de-growth, voluntary simplicity, and post-growth economics, this chapter briefly outlines the impacts across political, economic, socio-cultural, and technological factors. The central findings are twofold: First, consumption reduction leads to environmental benefits like using far fewer resources and dramatically shrinking the ecological footprint (Blackburn et al., 2023). Second, it shrinks the economy (GDP contraction), which will change our political, economic, and socio-cultural systems. For this change to succeed, new ways to measure progress (beyond GDP) need to be adapted (Cosme et al., 2017) and focus needs to be placed on creating jobs in service and repair industries, which will boost subjective citizen well-being and reduce materialism.