Lots of them realize there’s no rational explanation and use the old chestnut, “God works in mysterious ways”. As if that explains why any decent being would act like a psychopath. There are just so many things that can’t be explained and the Abrahamic god is riddled with contradictions. That the christian god is perfect and all knowing, but needed a do over in the form of the new testament is one of my pet peeves.
@tom If a person thinks there’s a reasonable explanation to your question, they probably wouldn’t be atheists.