I was right with you on the first sentence, "Religion was created by man", but then you lost me.
I would have continued it with something like....Religion was created by man, as a way to comfort oneself and to explain things that couldn't be explained, and it became a useful tool to control people.
"I don't know! I don't know why I did it, I don't know why I enjoyed it, and I don't know why I'll do it again!" -BART SIMPSON