If you don't believe in a supernatural God and the afterlife, it doesn't make you automatically untrustworthy, it makes you potentially untrustworthy. those who believe in afterlife and would even kill hundreds to get some young virgins in their imaginary heavens are walking around with the same potential. you either don't believe and insist on not believing, so you could do whatever you want, no consequence, no God. you want to have sex with a married woman. if you could manage to have sex without her husband finding out, nobody around to see. the potential in you is stronger to go along with it. if you get your hands on a few Millions, temptation to take the money for yourself and spend it because you only live once, is stronger.
I don't want to get off topic here, and no personal offense meant, but this is complete nonsense.
The Bible promotes slavery and states we should stone people to death who work on Sundays. Of course, these views are abhorrent, and no civilised society does these things any more. But how do we know? Because we have an internal, non-biblical, non-religious moral compass that tells us these things. You either accept that religion is
not in any way the basis for morality, or you accept that slavery is fine because your religion says so.
Saying that the
only reason you are not a stealing, murdering rapist is because you think God is watching is honestly terrifying.
The question I get asked by religious people all the time is, without God, whats to stop me from raping all I want? And my answer is: I do rape all I want. And the amount I want is zero. And I do murder all I want, and the amount I want is zero. The fact that these people think that if they didnt have this person watching over them that they would go on killing, raping rampages is the most self-damning thing I can imagine.