Well perhaps we need to ask "why do we engage in photography"? Is it to create soul-satisfying images that lift our mood - make us think - spur emotions? Or do we do it to get closer to some perceived mathematical idea?
Perhaps we could instead ask "why are we interested in how cameras work, in the physics of light and the human perception thereof, in the minutia of color spaces, and all the technical stuff?" Is it so we [geeks] can show off on fora such as this? Or, do we do it so we can take better pictures?