What determines who is the "Head of the Household"?

With the evolution of society, women becoming more independent, the feminist movement, gender equality etc, I'm very interested in the perspective about the Head of the Household. Whether you're single, LGBT etc, I'd like to know what determines who's the Head of the Household? How is it determined? How have you come to have the outlook that you have, about one being Head of the Household? Are both parties equally the Head, or is there no Head of the household? I wanna know your thoughts about this topic.

'Darryel's Daily Dialogue....where positive words, manifest positive action."