This chapter presents the theoretical landscape of the morality of secession in liberal democracies. The morality of secession never has a straightforward response and always implies a case-by-case analysis. Summing up, remedial and primordial approaches to the right to decide coexist in the Catalan secessionist discourse. A second contextual argument against the right to secede follows the logic of remedialism and denies that nowadays secession is a last-resort' option. The classic liberal and statist approach taken by the main Spanish political actors is far from offering alternatives to the current situation, in which political demands are being met either with straight rejection or judicial responses. The chapter argues that the lack of recognition and further internal self-determination can enlarge the list of Catalan grievances and legitimise a unilateral secession as a last-resort option if it counts on majoritarian democratic support.