Inane cliches/truisms you could go the rest of your life without hearing again

[🐒Gods of Prosperity🔱🐲💸]

If we're talking about generalizations about history that are assumed to be true but ain't really so much, then there's a lot of this in the popular view of family and gender in the past.   ex:

women were only property in biblical times

Augustine, Puritans were anti-sex

forced marriages were the rule before feminism, no romantic love before late medieval times

children just considered little adults in premodern times, no sentimentality because of high mortality

the law/society was never concerned with domestic abuse/child abuse/neglect before the late 19th/20th century

confusing matrilineal kinship patterns with matriarchal societies

[🐒Gods of Prosperity🔱🐲💸]

Wife beating wasn't handled in the same way, but that doesn't mean it was always acceptable or uniformly approved by the law.  It was often grounds for divorce, and in some places there could be civil redress (for instance in the 1641 Massachusetts Body of Liberties).  Elsewhere it was responded to with the folk tradition of "rough music."   Of course there was wide variety and in many places and times there was no redress or response, but that historical variety that is obscured by the generalizations I mentioned is my point.

By "anti-sex" I mean the idea that sex is just a necessary evil that is done only for procreation.  Augustine didn't believe this and the Puritans most emphatically didn't. Romance has been developed as a concept in a particular way in the late medieval and modern era, but the implication when this is mentioned can be that there's nothing we might consider a romantic idea or quality before then and people just shacked up for other reasons.  One need only look to the Song of Songs or Plato's Symposium to show this isn't the case.  Likewise, childhood changes through time but that doesn't mean it was a recent invention or not at all valued before modern times.