I don't see anybody but Christians pushing it. No, that's a bit too broad: I don't see anybody but American Christians pushing it. My religious German friends are clueless about it.
It seems to be an underlying belief of all religions. That is that in some form or another "we are the children of a higher power". It's just that here Evolution Theory is perceived to be somehow linked to the genreal decline of society by our Christian coutrymen. I guess anything that takes away from the collection plate is a threat to society.