Why does the Universe exist?
I don’t know. But 1000 years ago we didn’t understand the rain cycle, 300 years ago we didn’t know that bodies of mass were drawn to each other by gravity, 100 years ago we didn’t know how flight was possible, 60 years ago we didn’t know that DNA was at the root of all living things. Just because we don’t know now doesn’t mean we won’t know at some time in the future.
Nope, that’s a different thing, that’s just not taking a stance one way or the other. If you actively understand why you are an atheist and have reached that opinion through rational argument then it is a fully backed up belief.
Exactly
Atheists dont have to justify non belief in irrationality.
Okay, let’s turn it on it’s head. Why is religion irrational?