Our understanding of the laws of physics already accounts for situations with uncaused events, in fact. Radioactive decay is an example; an unstable atomic nucleus sitting alone in space with no outside interactions will sometimes spontaneously decay with no preceding “cause”. Virtual particles are another - subatomic particles can spontaneously pop into existence and then pop back out again without a specific event causing it.
With the first example, is that a case of ambiguous causation vs. uncaused? In other words, there may be a cause that isn't yet known? In the latter case, have these been observed, or is this a case of what is supposed to fit/support the model? Not to say it doesn't happen, but that like the former, it's a sufficient explanation given other observations/data in the absence of more information?
That said, I think for some(many?) your description/conception of rationality may be more applicable, but in the terms as I've laid them out, I would call that flexibility a case of rationalizing to accommodate a potentially more unwieldy reality. However, that's to be expected I think, as it seems to be another adaptation in human consciousness to try to navigate being conscious.