01-12-2011, 05:17 AM
I honestly don't know much about the legality, but as for motivation, I always believed it to be about internalized issues about power, control, and self-worth. Some people work out these issues, or at least work with or through these issues, through sexual activities that can border on the extreme. Some instead simply live in the experience of whatever self-percieved mental, emotional or personal deficit or shortcoming they have, sometimes exacerbating the issue, so I think the health of such activities varies depending on the person(s) involved.