Belz...
Fiend God
I don't see what skeptics have to offer as "cold harsh reality" or "nothingness".
[...]
And simply because the skeptic is not constrained by a belief in eternal punishment, that does not mean they will be socially destructive. As many have pointed out here, it is very easy to tell if someone wishes to hear about skepticism, or if they do not. And the truth is, it is very hard to shift someone from their belief. In fact, they have to do it themselves.
So I think the imaginary person in the OP will continue to cling to their belief because they wish to. As far as whether I personally would say anything to such a person would depend on circumstances; but I believe that the knowledge would set that person free for a richer life, not diminish them somehow.
Very good post, Amapola!