without christianity there would be no sustainable reproduction in america
Wow. I know Americans are stupid, but I didn't know they needed God to tell them to breed. I just assumed that, like the rest of His creatures, they were at least smart enough to figure that much out by themselves. 
. But sure, just like planet earth is a shitcoin forked from the stars going supernova. The Abrahamic religions are all pretty much rip-offs of the ones that came before it, and those are mostly reworkings/re-writings of all the various pagan religions before that. Nothing is original these days and is influenced by anything that came before it. Music, recipes, art, culture, even bitcoin. 