Nate wanted to argue, if only he had someone to argue with, that women want to be in relationships because on a gut level they don't like being alone. They aren't noble, high-minded individuals, concerned about the well-being of the nation or the continuity of the species. They simply swoon at images of cooking dinner together, of some loving boyfriend playfully swatting their ass with a dishtowel while the two of them chop vegetables and sip wine and listen to NPR (preferably in a jointly owned prewar apartment with an updated kitchen).