Murdering beautiful women and then admiring their beautiful corpses
If you think that "Porphyria's Lover" is Browning's only dramatic monologue in which the psychopathic speaker murders a beautiful woman, think again: "My Last Duchess" covers similar ground. All of Browning's dramatic monologues are written from the point of view of a deeply disturbed speaker, but not all of them involve the kind of murderous objectification of women that you find in "Porphyria's Lover" and "My Last Duchess."