If it wasn't for religion

[unfogged]

No, it doesn't say "all is permissible".  It doesn't say anything at all.  

Exactly, in a reality that says nothing at all, all is permissible.

That does not follow; the fact that one possible source for a moral code is silent does not mean there there is no other source for developing a moral code. There are plenty of rational reasons for limiting actions that have nothing to do with the fact that the universe does not impose limits. You are arguing a strawman that few, if any, atheists hold to.

What you are saying, in essence, is that you are unable to find any reason to be a decent human being without having some authority figure hold a carrot and stick over your head.  

Did I say anything about an authority figure holding a carrot and stick over our head? I said a reality that posses moral purpose and aims.

Please provide an example of a moral purpose or aim that is provided to us by a reality.

It’s existence is not dependent on my beliefs, nor are it’s implications. The law of gravity, doesn’t require my beliefs to be applicable to me.

In fact any moral claim or statement from an atheists or anyone else, to not be reducible to the decorative frills of personal opinion, like your taste in food or movies, requires the existence of such a reality to make your  moral pronouncement mean anything more than gibberish.

Atheists might struggle with a ton of cognitive dissonance trying to deny this but the very existence of dissonance, just confirms the implications of such a reality, even among those who think they don’t believe in it.

Morality is not based on "the decorative frills of personal opinion". It is based on a rational evaluation of the consequences of actions in relation to goals for creating an equitable, harmonious existence for sentient beings. If you are not talking about at least that much then you are not talking about morality in any way that I can relate to.

The facts of reality must be taken into account when evaluating moral decisions but they do not tell us what is or is not moral.