Atheists, tell me, a Roman Catholic: why should I become an atheist?

[downbeatplumb]

Hi Balaco! Even as a Christian, I can always respect a position of healthy skepticism.  Tell me, have you ever considered that maybe the evidence of whether God exist or not, is the same evidence? As in, whether you choose to believe in a God (or absence of God(s)), all of the evidence will support your position. 

So in essence, it all starts with you. What do you want to believe?

There is a perfectly good method for separating preconceived ideas from fact it is called the scientific method.
That's what its for.