Kasser demonstrates that individuals who prioritize materialistic values are more likely to experience mental health issues such as anxiety, depression, and low self-esteem. This is because the constant pursuit of wealth and possessions often leads to feelings of inadequacy and dissatisfaction, as material gains do not equate to emotional fulfillment.

The book highlights how materialistic values can strain interpersonal relationships. People who focus on material wealth tend to have weaker social connections and less satisfying relationships. This is because materialism often promotes self-centeredness and competition, which can erode trust and intimacy in relationships.

Kasser also examines the broader societal implications of materialism. He argues that a culture driven by consumerism can lead to social fragmentation and environmental degradation. By prioritizing material wealth over communal well-being and environmental sustainability, societies risk creating a less cohesive and more polluted world.