This paper straightforwardly addresses one of the strongest, from an ethical perspective, objections presented to the duty to die, the one concerned with the lack of a normative theory to support it, offered by Seay in his paper Can there be a “duty to die” without a normative theory? The aim of the paper is to provide strong metaethical grounds to support the duty to die without the need of a moral normative theory. First, the definition and main argument for the duty to die will be presented. Second, Seay’s objection will be described and clearly explained. Third, our metaphysical assumptions and a preliminary metaethical discussion will be offered to situate and understand the context. Finally, we will show how the duty to die can be integrated within the metaethical approach previously presented, defending that there is no need of a normative theory to provide good justification and strong ethical grounds for the duty to die, because they will have already been provided by our metaethical argument