Talk:Crystal Gems/@comment-26877931-20151017014415/@comment-28584561-20151017021238

The difference being that the Gems came from another world to use up all available resources of a planet foreign to them. Humans thrive on Earth and though we may exploit resources, we try to return back or at least conserve some. The downfall ofEarth is the downfall of humanity, and we don't want that.

Also, the CGs seem to just protect the earth from Gem driven calamities or events. Anything brought about by human activity and natural forces, they try not to interfere.