Color, especially brilliant color, is an attractant for most species, whether wasps or gallery visitors.  And color is fun to work with, whether as shot or hyped during processing.  Digital tools make it possible to hype a great deal, but photographers have been manipulating images in chemical dark rooms since about Day One, with such techniques as solarization.  Now High Dynamic Range digital processing is readily available to everyone and has shaped perception of what is "attractive," even though it often leads to unfortunate excesses.   

(We'll leave for another day a discussion of alternative reality, and the apparent notion held by a significant part of the population that all real-world facts can be altered, indeed Photoshopped, their colors inverted, black made white, white made black, inconvenient bits cropped or cloned out, sharp rendered soft, soft rendered sharp, heads inserted or deleted.) 

So the neutral and muted, low dynamic range subtleties of clouds on a relatively colorless day may bore many.  But to me they are a refreshing reminder that gray can be good, and that extremes aren't necessarily the only way to describe the world.    And just in case anyone is curious, these are not Black and White conversions; the grays also incorporate pinks and blues, just as the sky really does.