What I'm saying is that atheists argue against a version of our beliefs that they create.
Because beliefs aren't static and they cause people do act certain ways, do certain things, etc. It's very worthwhile debating beliefs depending on how they affect people, or you can simply stop posting in faith-based discussions.
No, because you don't believe that. If you did and taught these as truth to your kids and others, debating them then serves a purpose, and I would debate it with you.
But since you don't, no I wouldn't. I don't debate something that someone doesn't believe in -- if someone believes in the Muslim God, I don't debate the existence of unicorns (like almost every single atheist does -- they don't really debate your belief, but the strawman unicorn they equate them to).