Mostly unrelated, but I find this disgusting, along with some of the other fractal visualizations I've seen. I don't really have a reason for it; it's just a visceral reaction that makes me cringe. All the little parts and the strange shape..
Some people have a similar reaction to porus/holey objects like http://farm2.static.flickr.com/1406/1093460880_2af2500cc8.jp... . It seems common enough that there's probably some instinctive reason for it. The image of the triangle has a kind of similar feel to it.
Wow that actually causes a mild fear reaction. It's like seeing something with many eyes and historically many-eyed creatures haven't been particularly friendly.
On a more serious note I agree that it is not aesthetically pleasing. I put this down to it not being rendered in a manner that lets us see how the shape works (e.g. lighting, shading etc.) so it just seems artificial making it hard to see what 's going on. I've never seen one of these in 3D before either but in 2D I didn't find it that appealing either because of the way it reduces in size as it repeats fractically - it seems messy.
Does anyone know why this might be the case?