Why does there seem to be some idea that trading queens is the start of the endgame? What does trading queens have to do with the endgame? Why are queenless positions often considered to be endgame positions?
I have also heard repeatedly people saying "trading queens doesn't mean it's the endgame guys" so it seems like an "urban myth" kind of thing. How everyone loves debunking common knowledge. That actually shouldn't count as common knowledge anymore because everyone debunks it.
There is definitely some association between having no queens, and the endgame. How did this association begin and why does it exist?