Because in everyday life we can see the rotation of the clock hands but not the rotation of the earth.
You donβt see the sun move in the sky? Or do you think the sun is actually the one moving?
So you say I need to know my orientation and position on earth and their orientation and position on earth just to tell someone in which direction I need to rotate something?
The earth spins on a leftward direction on the same plane it orbits the sun. Is that so hard to grasp? More hard than to teach everyone that clocks HAVE to spin in one direction?