TonyRo,
Here's the deal. I'm an atheist. I grew up in the very same society you grew up in. I learned how to behave at my mother's knee, just like you did.
I learned all the rules of our wonderful society, just like you did. I'm not going to rape, loot, and pillage, anymore than you are. It would never occur to me.
Why don't I do it? Because it is not in my nature and not in my upbringing.
What keeps me from doing such things? A conscience, just like the one you have, along with a desire to do the right thing at all times.
Atheism and religion have nothing, really, to do with how individuals behave themselves. Individuals make those decisions themselves. Plenty of folks who call themselves Christians have done horrible things. So have some atheists. Plenty of atheists have led exemplary lives, as have plenty of religious folks.
The constraints you have against doing harm are more a function of your upbringing before you were even aware of what religion was. If you behave, it is because you learned self-control at the knees of your parents.
Religion does not guarantee good behavior, I'm afraid. We have far to many examples of the opposite. A lack of belief does not guarantee bad behavior, either. We have lots of examples of that, as well.
This is not about behavior. It is about the teaching of science. I wish we could stick to that subject.
Atheist and secularists are using up the remaining credit of a society and culture founded on morality which stems from universal religious principles.
Have fun using it up!
Anarchy/barbarism awaits, unless...