I find that arguing about the existence of God vs a purely "physical" or "Natural" universe is mostly a waste of time because it's like two people arguing about which clothes a celebrity is going to wear; the answer is eventually going to present itself regardless of the outcome of the argument.
But just for interests sake let me ask this: If you don not believe in any form of supernatural world or existence then what is your moral compass based on?
As far as Atheists are concerned we (humans) are simply a composition of biological factors that have somehow occurred in such a way that we are capable of conscious thought. This implies that when we die, we cease to exist. Now true nothingness is something we humans cannot comprehend, can you imagine simply not existing? Can you imagine not BEING. It would be as if you never existed, and as if nothing ever existed.
When you consider the above statement then I ask again: Why do Atheists bother with any kind of moral code? Why not just kill yourself and get it over with.
Please don't "spam" the comments section as I would very much like to hear the Atheists justifying their existence.