I think they're evil. lol.... well, at least they bit alot when I cared for them at the pet store I used to work at. Plus, they're not attractive to me. I've seen pictures that I thought were AWESOME, but I always assumed that was just once of those spectacular specimens.
Also, I don't think people sell them as much....so noone tries them out. And, last, I think the color isn't as attractive as WD's.