I think for most it's about exploration, But once you've found your itch finding someone to scratch it can be difficult. I enjoy CBT... sounding, ball stretching, cock slapping and squeezing to name a few. I'm curious about pegging. I'm typically a Dom for the most part. But I've also led from the bottom a couple of times to give Dommes' more experience in these areas. It's all about communication and negotiating a scene. As an example; if you don't want bodily fluids, that is off the table. Safe words. Instruments of pain or sensory stimulation. etc. Such a huge array of possibilities.