So long as whatever your doing is safe, sane, mutually consensual and only involves adults I honestly don't care truth be told.

I am not here to judge anyone.

I only responded with my own views as to the original question and then to the implication brought up by the op that someone in their familey "forced" them to do bdsm things with them, which of course makes things non-consensual.

Blackmail or roleplaying a blackmail scenario as a fantasy is one thing, its a very common theme in "stories" but as with most things an entirely different matter in real life.