Nature
Altering one's body by piercing, cutting, scarring, branding, amputating, or blood-letting, whether self-inflicted or inflicted by others at one's request, is seen by some as a form of pleasurable pain, an erotic or spiritual experience.
Claim
People want cuts for adornment, or as a test of endurance, or as a sacrifice toward spiritual transformation. Being cut is a strengthening and powerful experience.