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

[The Joker]

Here's another logical argument which cannot therefore be wrong based on one's private feelings (as opposed to public ones, I suppose?):

1 All elephants are pink
2 Nellie is an elephant
3 Therefore Nellie is pink

(Argument is flawed there are no pink elephants, haven't seen a real pink elephant on media, zoo.)

Here's another one:

1 Something must be done
2 Here is something
3 Therefore we must do it

(Argument is flawed as we don't know what that "something" and therefore how can we do it?)

And another:

1 God is the most powerful entity in every reality (True)
2 The greatest power is to be able to act while not existing(Act what? And how not existing?)
3 Therefore God doesn't exist

(Argument is flawed, therefore God does exist.)

Remember, one's personal feelings cannot refute any of these.(True, but logic can)