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

[robvalue]

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?

Belief is not a choice. No one (unless they are crazy) can simply toggle their beliefs on and off. We base our beliefs, or lack of, or beliefs to the contrary, on evidence of some sort. What counts as evidence to each person, and how convincing it is, varies wildly. But each person has reasons for their beliefs. You can't make those reasons disappear because you want to believe something different. A change in belief requires new evidence, a re-assessment of the current evidence, or a revision of the methods used to assess evidence. (Screwing with your brain directly could of course alter your beliefs, for example with surgery or drugs.)

You can of course pretend to believe whatever you want.

And of course, as I always find myself saying, without a falsifiable definition for God, there can't even be any evidence. There are just rationalising arguments and baseless assumptions.