I'm not abused or anything, just really clumsy. I get bruises on my legs and arms a lot from bumping into things or tripping and falling. I always like looking at my bruises. I think they look really pretty and cool when they start to heal and turn different colors like purple and yellow. Is it normal to think that bruises look pretty?

I've just changed my profile picture to be one of a bruise I had. The picture is a bit washed out and the bruise was more colourful than it looks, but it's still pretty nifty.
http://www.flickr.com/photos/kaylangelicaphotography/6349020171/
I'm really into body mod and have always been fascinated with scarrification myself. Obviously that's a bit different from what you're describing, but giving other examples of where that of aesthetic is common :P
Good idea, thanx!