There is no reason for that, because religion demonstrably justifies immoral claims and promotes immoral behavior.
Obvious examples are pedophilia among priests, and denying a woman with a bad pregnancy healthcare even if she may die, and claiming sexuality is a moral issue.
Edit: Some unfortunate wording, that said the opposite of what I meant.
You really don't have a clue on this issue do you?
Watch some Dawkins and Hitchens debates, watch the atheist experience, and maybe you'll get a clue about the meaning of the meme.