I’ve considered the idea that there is something specific to Christianity that fostered BDSM, which no other culture did in quite the same way. It sounds good, but it’s a little too glib and simplistic to be persuasive.
But then I found something in David Kunzle’s History of the Comic Strip, Vol. 1 (University of California Press, 1973) that made me think there is something fundamentally kinky about Christianity after all.