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

[robvalue]

"Die for a lie" is a nonsense argument. Consider a religious war. At least one side is wrong but prepared to die for it.

But then lying and being wrong aren't the same thing anyway. Just because you believe something is true, it doesn't mean it is. There are also plenty of reasons why someone might die for something they know to be false anyway. It's appealing to motivations rather than facts, which is unreliable.