Some atheists can be. Most don't. We understand it is irrational - like being afraid of the dark.

Are you afraid of going to some other religion's version of hell? No? Why not?

You weren't raised to fear another religion's consequences.

Similar to a childhood trauma, where one can have a fear of snakes, closed spaces, dogs, etc., many fears and biases that one grew up with can linger for the rest of one's life.

That does not make it real or legitimate. One can irrationally fear something. Some can work past their fears, and many never had them.