NAH your all wrong. its like asking why countries like britain drive on the left and others drive on the right, well everyone knows the answer to that. if cars all were to drive in the same direction and airplane props all rotated in the same direction it would make earth spin too fast. so to keep it spinning at a constant safe speed some go one way and others go the other way to slow it down. if the world was to spin too fast then what would be the use of getting drunk at the bar, it just would not be the same to say to the wife oh i dont feel too good the room sint spinning