Have you ever heard of extreme body modifications, eg implants, scarification, extreme piercing?
As for me, some things people do with their bodies calling them arts, are really bizarre.



For more pictures: Plastic Sergeant Modifications

Wikipedia:
Body modification (or body alteration) is the permanent or semi-permanent deliberate altering of the human body for non-medical reasons, such as spiritual, various social (markings), BDSM "edgeplay" or aesthetic. It can range from the socially acceptable decoration (e.g., pierced ears in many societies), to the overtly religiously mandated to corporal punishment, to provocative statement by the rebellious (e.g., tongue splitting).
Some even become physically addicted to the adrenaline/endorphin release associated with a painful procedure in a way analogous to that experienced by those who self-harm. Some people experience an abstract but distinct compulsion to modify their body that appears to have no underlying or external reason.

What's your opinion on the topic? Why do people do these things, if most of us find them really disgusting?