What do you think about people who do extreme piercings, tattoos, or body modifications?

I don't know, that is why I am asking. I could come up with a theory, but it doesn't make me right!
My personal opinion: If I see someone doing something so drastic to their outer body, it makes me think that they are very insecure on the inside. They don't think their inside is unique enough to stand out from the crowd.

@NineLives: Okay, I see. I think it depends on the tattoo, but to me it's when people want to be differentiated from the norm, tattoos can be powerful.