What's missing from the history of the world is who set it up (names), how it was done, what kind of timescale it was done in, what the main cities were called, how they came to be built, how diplomacy went during their building, what happened in the point-to-point races fifty years ago, who the most famous traveller in the history of the Temple of Freedom is, who was the greatest sword in the Kingdom thirty years ago, who was the worst Gladiator evar, what Juilin did in order to gain the blessing of Errolisi & Mithaniel Marr - and that's just off the top of my head in five minutes.

I miss the fact that I cannot define my world without someone else saying I am defining theirs. I miss the fact that I don't know how, where or when Juilin grew up, because the world is not in place for me to have done so, and so whenever I make a reference to my history, I am just waiting for someone listening in to pipe up and say "I'd really rather you didn't say you'd done that, because..."
I can't claim to have a history for fear of offending everyone else. I don't like playing a character with only two dimensions who can't talk about themselves. I might as well bring a set of dice to a larp and roll out what I do instead.