Answer:
Most atheists are atheists.
That's all we know.
What atheists are "really" like and what they "really" believe and what happened to "make them that way" fascinates many people - or perhaps fascinates a particularly hyperactive one.
The questions keep coming.
No answer is satisfactory.
Atheists might be "empiricists" - they might have more of a tendency to go with what can be demonstrated rather than what can't - but, as has been said so many times before, atheists aren't a club. There's no roll call. There's nobody to ask.
So.
Your guess is as good as mine.
Step-by-step explanation: