I don't understand your reasoning, for I did not get my morals or knowledge from the bible and yet I am not a caveman and I do have good behavior towards other humans... These are all basic necessities humans have adapted over time to better co-operate with one another through the evolutionary process. Yes at a time we were probably self dependent and fought for ourselves and our own food in the wild but the group that survived better was the ones that co-operated with one another. This brings up the evolutionary process of the dog/wolf. Some wolves learned they can live better by working in groups, others learned they can get free food by being with humans. Over time they adapted to their different environment of living and now you have almost two different species from the same origin (domestic dog and herds of coyotes/wolves ect.)
Getting back on topic, you seem to be strongly hateful towards atheists making derogatory assumptions and obviously not open to contradicting opinion. If you are not going to argue your stance and would rather say hateful comments, don't comment at all. I can understand that you believe differently but it is important to understand other people's positions. The only reason you posted this comment is maybe to get approval from other like minded thinkers but was in no purpose was your comment made to argue another position.