I think that is the whole point. Why fear the big nothingness if it's not possible to experience it? Just like how it's impossible to experience or remember anything before you became alive.

I find it comforting to realize that I once wasn't and now I am. I will once again cease to be. We often think death is final, but if we already made the transition from not being to being, who's to say that, in some form, we might once again become something from "nothing."