Every GM will end up making details about their campaign world that the players will never even see. Just think of all that lost creativity.

Some frustrated GMs will go on to careers in movie making.

Transcript

{Anakin rides a hoverbike across the landscape, past stark rock formations, as the twin suns of Tatooine sink to the horizon}
{He reaches a Jawa sandcrawler}
Jawa: Sand People? They're camped in the Jundland Wastes, through Beggar's Canyon, on the other side of the Dune Sea, beyond the Valley of the Wind, which is across the Great Mesa Plat—
Anakin: Is there any chance there's a shortcut?
{beat}
GM: Can I just read the description anyway?