Then how would they have come to any belief in the first place without some sort of foundation?
I'm an example:
I don't believe in God. I'm an atheist. Why don't I believe in God?
There has been absolutely no evidence for a god, a fairy, a genie, magical elves, etc and so I dismiss them until such evidence is provided.
I don't believe it is possible to prove that God doesn't exist and I hold to the fact that it is possible a god exists, and should enough evidence come forth to convince me, then I will change my mind. I'm agnostic.
I don't claim enough knowledge to "know" that there is no god because knowledge cannot prove a negative of that type. I do claim not to believe. How would you define me?
Edited by Perdition, : No reason given.