TIL: Kinks are both learned AND hereditary according to several PHD researchers. As inheriting some bodily features, such as sensitive nipples will draw offspring towards BDSM elements for example. The conclusion is that inherited traits and prime conditions can lead to one developing similar kinks.

https://www.glamour.com/story/are-kinks-hereditary

https://www.reddit.com/r/todayilearned/comments/15jfyn3/til_kinks_are_both_learned_and_hereditary/