Why Goths? I don't know. I guess I find them to be under-appreciated and often sexy. And I just want to mention that "Goth" is a subjective term. So if the photo doesn't seem like a Goth to you, then I'm sorry. To me, the Goth look can encompass a wide range of styles - so each week will be different.
Anyway - as Nigel said in Spinal Tap: "Well so what! What's wrong with being sexy?"
Note: I don't know the origin of this photo. I found it on a blog about Goths, and the blogger herself admitted she didn't know where it came from. She apparently found it in a Google image search. So I can not identify the model or photographer for this image.