I tend not to bother trying to argue with religious fundamentalists, be they Christian, Muslim, whatever.
It's not because I necessarily hate them. As long as they do not try and force their beliefs onto me, they can go around thinking there's a big dude in the sky that hates us and the Earth is only 6,000 years old. "It neither picks my pocket, nor breaks my leg" so long as they respect my rights, and the fact America is an explicitly secular governed country. It's just that there's no point in debating them.
Debate and discussion are fine when they consist of two or more parties engaging in a rational co-examination of agreed-upon, verifiable facts. It's even fine if facts are in some degree of dispute, as long as evidence introduced into the discussion is accepted. It's even okay if interpretations of the facts differ.
But when one side says, "this unverified, unsourced Bronze Age book is the ultimate truth, our interpretation of it is the only valid interpretation, and we won't accept anything the contradicts said interpretation, no matter how repeatedly replicated or well-sourced," well then, there's not much point in continuing the discussion. There's no common frame of reference.