Over a decade after the Karlskrona Manifesto for Sustainability Design broadened the scope of software sustainability, the individual dimension, encompassing human motivation, ethics, and well-being, remains conceptually acknowledged but poorly operationalized. Although sustainability research in software engineering has diversified, it still prioritizes environmental impact and technical efficiency, overlooking the cognitive and ethical conditions that sustain them. This position paper argues that this imbalance limits the ethical and epistemic depth of the field, particularly in digital health, where systems directly affect human cognition and professional integrity. Drawing on tertiary studies that reveal the limited stratification of sustainability dimensions, we propose repositioning the individual dimension as the foundation of sustainability-aware design. The SEEDS framework (Sustainability in Biomedical Software Engineering), developed at UFCSPA, is presented as a reflective construct that visualizes asymmetries among sustainability dimensions and bridges evaluation with ethical awareness. Revisiting the Goal–Question–Metric (GQM) paradigm and the growing influence of large language models (LLMs), the paper calls for a shift in consciousness: sustaining software ultimately requires sustaining the people who create and depend on it.