There's all sorts. I always liked getting pierced 'cause it felt good. The piercing itself was painful but I'd get a rush for a while afterwards. I also was into the adornment factor -- it's jewellery.

I can't really speak to tattoos, but I think it's the same for most people. The act is quite powerful, and there's something to remember the experience by. People like to wear art by good artists, as good art is beautiful.

Plastic surgery, I think, speaks for itself. I don't think that people really like the experience of it so much as the result. I don't have any real experience with this other than a friend of mine who's pretty heavily into body modifications wants to get a boob job before the year is out, so not so much of a sample size there.

As for these temporary and more 'extreme' piercings like in the picture? I again think it's the same. It's got to be one hell of a rush, and the aesthetics can be pretty neat, if that's your thing. Plus they come out at the end.

If you have a professional doing the actual work, and you're willing to care for the work, all of these things can be really safe. I'd be more worried about anyone going under general anaesthetic for plastic surgery than any of the other kinds.

I'm not an expert at all on this stuff, so someone will probably rush in to correct me, but that's my take atm.