IMO people who believe in a Diety adopt an additional set of rules which transcends the secular legal system. From them one can expect a higher standard of behavior and understanding. The Bible teaches a lot of these things as does the "I Ching" or "Qua'ran" or even the "Kamasutra".
Since atheists don't subscribe to this higher standard of behaviour or accountability would they be less dependable? Since the consequences of their actions are only punishable by secular law, are they somehow less inclined to do right? Since their existence terminates with their death, do they tend to demand immediate gratification?
Could this paint the picture of a conceited, sneaky, less reliable person bent on self-gratification?
What do you think?