Why do we like pictures of cameras!

lumix GF1 voigtlander 50mm f1.1 nokton

By far the most popular pictures on the soundimageplus flickr account are of cameras and lenses. Is it that, as photographers, we like "camera porn" or is it just a way of getting to see what a particular combination would look like?

E-P2 GF1 20mm f1.7 7-14 f4 zoom

Panasonic GH1 Zeiss 50mm f2 Planar Zeiss 21mm f2.8 Biogon