This paper presents a second reflection on the question of why we buy things we do not need, integrating perspectives from psychology, neuroscience, and recent neuromarketing research. We explore five main factors contributing to this phenomenon: behavioral reinforcement mechanisms, the influence of social pressure, the role of somatic markers in decision-making, the impact of social media algorithms on impulsive buying, and the influence of cognitive biases such as loss aversion and anchoring. These insights reveal that purchasing decisions are often guided by unconscious mechanisms rather than rational evaluations of need or utility. Additionally, we discuss how social and digital environments amplify these effects, creating a fertile ground for habitual overconsumption. By highlighting these interconnected factors, this paper contributes to a more comprehensive understanding of why consumers engage in unnecessary purchases and offers valuable implications for both scientific research and marketing practice. Future research will aim to develop explanatory models that can predict consumer behavior by experimentally manipulating one or more of these key factors, further advancing this critical and growing line of research.