I have a sim whose sole purpose in life is to seduce Elder women, invite them to live in his home, and then woohoo them to death after he has their money. He's a modified townie with the nickname "The Butcher of Kharkiv"; his most notable "conquest" was freeing Raj Rasoya of his hectoring mother in San Myshuno.
Show me a married premade and I'll show you someone whose marriage is about to be destroyed. Premades with potential value to my simworld's story canon are thus made available for dating/marriage; those without are killed off. Or, in the case of the Landgraabs, Geoffrey has been made to raise Nancy's illegitimate children by various men as his own, but the two remain married. He gets a measure of revenge by woohooing his way through as many women as he himself can get hold of.
My simworld is otherwise a fairly idealized place in a '50s sitcom sort of way. Wholesome families who say their prayers to the Watcher and stay out of trouble while striving to be their best selves. Definitely an escape from real life!