The use of taboo family relations in Primal serves several purposes. Firstly, it allows the show to subvert traditional notions of family and relationships, creating a sense of unease and uncertainty in the viewer. This unease mirrors the characters' own experiences, as they navigate complex emotions and situations.

Primal's taboo family relations are a key element of the show's success, offering a nuanced exploration of complex emotions, needs, and desires. By presenting characters in non-traditional family arrangements, the show's creators can examine themes and ideas in a unique and compelling way.

Secondly, taboo family relations provide a means of exploring complex themes and ideas. By presenting characters in non-traditional family arrangements, the show can examine topics such as loneliness, companionship, and the human (or primal) need for connection.