Where to go from here?

[Ahriman]

Nah......atheists definitely believe the universe came into existence from nothing, for no reason.

 That is simply untrue.

Can it possibly be that after all this time you remain so ignorant over something so basic?  

One more time; an atheist is a person who does nor believe in god(s)  NOTHING ELSE IS IMPLIED OR MAY BE INFERRED.

Beliefs about the origin of the universe come under the headings of Cosmology and Physics. Nothing to do with atheism.

As well as being agnostic about god, I'm also agnostic about the creation of the universe. IE I cannot claim to know and so have no belief.

I'd really appreciate it if in future you would try to refrain from telling me what I do or do not believe, other than the existence of god(s) There's a good chap.

You will never find an atheist who doesn't think the universe spontaneously came from nothing, and that all life is accidental. That's what atheists believe.