That doesn't really stand up to much scrutiny does it?
Good people have never done evil due to betrayal, or love, or lust, or economics, politics, flags, land, oil, or mental illness, or lies, or booze, or drugs or any one of another million reasons? Or perhaps you think that anyone that acts out of character out of desperation was evil all along, just biding their time?
Come on, there are stronger arguments than that against 'god'.
I am not arguing against a God . I am just pointing out that Religion can give otherwise sane people justification to do insane things .If you can make people believe absurdities then you can make them commit atrocities.