Until that time, are you obligated to take a stand about these hypothetical forces? Or will you shirk your responsibility of holding a belief about them? And given an indeterminate number of possible concepts that may be true or false but which have no evidence to consider, how many of them do you feel the need to "have to consider that it might exist"? Could you list a few?
Seriously, does it make any sense whatsoever to measure the strength of my lack of belief in these as-yet undiscovered, unproven forces? This smacks of the Conspiracy Theorist "it's your responsibility to prove it didn't happen" mentality! This is the whole reason for burden of proof. What you are suggesting asks us to hold positive opinions on things that are not part of our world view--the fact that it happens to be the historically popular idea of a god or gods is the only reason anyone would give it a second thought, and IMO it is a pretty lame reason.