Atheism is a religion too, durp.
Before a HUGE religion war starts, just say all religions are equal, because they are for the most part. No religion can trace back to the beginning of life, except ones who believe in God, but because there is no real proof of God, that's an empty point.
How did people get here?
Evolution
How did first life forms get here?
Big Bang
How did the big bang happen?
Energy
Where did energy come from?
Atheist: The universe Christians: God
Atheist Final Question: Where did energy come from
Their response: Well where's your God?
Therefore, nothing can be proven. So stop stuffting over it