What is ... "it"? My despair?
I understand your point about lies vs myths. If I substitute the two words in my mind according to your explanation of myths and their purpose, then everything actually does seem to make more sense and is more acceptable in my mind.
If someone tells a lie the connotation is that it's meant to harm others to their own benefit. If it's a myth, then they need that ... not accurate portrayal of the world in order to keep going... to survive, perhaps as an individual or group.
Who's connotation? I think that's a very myopic take on lying. Insofar as people care for others, people frequently lie to benefit those they care about. Some people believe the truth is more important than sparing the feelings of somebody you care about, and that's totally fine. But that point of view is not universal to humans and many people believe lying for the benefit of others to be reasonable or even obligatory.
I won't bore you with examples of such lies; I think you can probably imagine a few. Some are trivial, and others far more substantial. Whether or not those lies are justifiable under your personal system of ethics (or my own) is beyond the point; the point is that to some people those lies are justifiable and for those people, lying is motivated by a desire to benefit others.
[1] https://web.archive.org/web/20140222103103/http://subterrane...
The book Sapiens covers this well, that you cannot escape the prison of a myth without being contained by one larger.
If one takes “myth” to mean something that is itself believed without being falsifiable, it is true by necessity of any belief system with any content beyond statements about the subjective experience of the believer
Reality is formless, and we reason about it through what Foucault called grids I think, where every structure that we impose on it to bring something new into view necessarily obscures something else.
This is a bit like what Alan Watts talks about when saying that stories are like music, in which it wouldn’t have any form unless there were notes left out.
I think of a fact as a compressed statement of experience in service to some story. This is like the surprising observation that bits of information seem to always have some color that cannot be captured[1].
And there is the type of myth I like to call Fruith, as opposed to Truth. Most myths comprising culture might be these—in that we pretend things are true in the belief that it brings something more important to fruition, and that is the truth which overrides the seminal “lie”.
I see your despair, but I think it’s bigger than what you may be suggesting.
[1] https://ansuz.sooke.bc.ca/entry/23