I think it is important to discuss the phenomenological context of sexual fantasies (which get acted out in BDSM, etc) - where did they come from and why are they there.
I remember reading an account of an African American woman's BDSM experience where she was into being tied up, put up on a platform stripped and humiliated whilst being sold to the highest bidder. The other people involved believed that it was not racist or anything to do with slavery, but in her mind it absolutely was.
How had she come to fantasise about the degradation of her ancestors? Why was that in her mind?
Also a lot of Catholics are into kink - if you think about spending one's whole life worshipping someone who is being tortured to death on a cross and hearing about the gristly end of the saints, the whole thing about chastity and virginity being gone on and on about - it also creates a lot if psychosexual phenomenological content.