But it is. How does an atheist answer all the “why” questions? Even if it’s by saying “There is no answer,” that constitutes a belief system.
Nihilism imposes its own order on disorder. It’s the fatal flaw in Post-modernism.
So this very notion that there is one particular way to debate an atheist is incorrect. First you have to figure out what belief system they have, if any. Personally, I don't have one. I'm not a nihilist. I'm not a scientist. I'm not particularly philosophical. I don't "believe" anything. I have some ideas, but I don't know if they are the truth, and I don't think that mankind has, at the moment, the wherewithal to learn the truth. Therefore I don't concern myself much with it.