It's like any other form of self-expression. It depends on what the person chose, what you think of them. For instance, comicbookgirl on Youtube has beautiful tattoos. I think she looks amazing. But just recently I was standing behind a woman with a huge swastika tattooed on her leg! I thought she looked like a real ******. So it depends.
I think certain tattoos on certain women are gorgeous. Some are stupid, though, like the names of their lovers. I'm only 16 so I don't know if I'd want a tattoo, except for maybe my first dog as a sense of APBT pride.