Well the liberals would probably blame the conservative anti-sexuality culture.
Of course, we should think about this some more because apportioning blame is very important.
I said 75 (though I'm not strictly an atheist by definition).
There's research out the on this kind of thing though. I know atheists and one other group (I think maybe Jews? But could be wrong) did the best at identifying concepts in various religions.
#9 Imposing a particular set of morals may be a tool of control.
We all have morals though, or ethics (or call it what you will) at a biological level.
To rationalise against it is really just trying to make you look like you're not just advocating wanton cruelty on a whim. Which more or less...
There's a large community of Discordians out there developing further works to expand on religious canon. 'Black Iron Prison', 'Memoirs of a Faceless Man' and the Intermittens series are some, but there's a large variety.