This was an interesting thread to read, so far.
Can I be allowed me to put my two cents in?
OK, good.
Human nature, as evidently brought on by our evolution, is that we are a social species. It is what gave us our intelligence and the ability to express our "self awareness" (apart from our thumbs and utilization of fire).
As such our societies have evolved along with us. Practices that we deemed barbaric, like various forms of entertainment and execution are labeled as barbaric and unthinkable in most modern societies.
Never the less, atrocities happen, "evil" people exist and thoughtless acts are still committed against fellow human beings and to our planet every day. Statistically, however, human society today is the safest, most prosperous and most altruistic now than it has ever been in our entire history.
I've been a practitioner of self crucifixions since I was a teenager and when I was in college I was immersed in a close nit group of sexual enthusiasts and had both Sub and Dom relationships with a number of people.
The thing that we all had in common was, apart from our particular fetishes, we were able to separate fantasy from reality. All of us where law abiding citizens that partook in completely consensual acts with one another and if at any time anyone felt threatened, mistreated or just uncomfortable any action deemed unwarranted would cease immediately.
At our core we were all naturally kind, caring and altruist people that just so happened to have sexual desires we wanted to explore and never did anything illegal in order to explore them.
A healthy mind is able to analyze the emotions and desires it has and draw conclusions as to the "morality" of the thought.
Am I attracted to pictures and videos of girls being "crucified?" Yes I am, however, those girls are actresses and those scenes do not end in their deaths or major life threatening injuries. Same goes for any main-stream porn scene depicting BDSM practices, even those that can be labeled as "rape or torture porn."
But that's just me, what do ya'all think?