Take Edgar Rice Burrough's Tarzan, H. Rider Haggard's Lost Civilizations and John Norman's Gor and as your heroine princess raised to believe she's divine and men are extinct and you have the world of the Atlan Saga. Atlan, the second in the trilogy (or third, given Serpent is sometimes split into two works), continues the perils of Princess Cija, who falls into the clutches of Sedili, the first wife of her lover Zerd, a man-serpent general. Cija does grow on you, which given these are supposed to be her diaries is important, and this is my favorite of the books narrated by her. (Her much smarter daughter Seka takes over in Some Summer Lands.) Sometimes I'm embarrassed to admit I've read these, let alone these are favorites that have been on my bookshelves since my teens, but there you are. Addictive like crack. Or just crack pot.