Atheism, Religion, Christianity, God is Imaginary, Holidays, Prayer, Ricky Gervais. "Atheists shouldn't share our christian holiday. Just work instead." Haha & you shouldn't share our medical research. Just pray instead.
Education is key, though. If you let humans grow up without knowledge of where the sun goes at night or why earthquakes happen, they'll just invent their own gods to explain it all. That, to me, is one of the strongest arguments against God or gods - they can so easily be created by man.