Your thinking is wrong. The rotation of a planet has not "been made" for a purpose.
Planets rotate because of a law of nature called "the conservation of angular momentum".
The dust cloud from which the a star and its planetary system forms had angular momentum (internal movements) and as gravity drew this matter together this momentum ends up as the spin of the star, its planets and the orbit of the planets round the star.
The force that keeps all of our planets in rotation is gravity.
its rotation is opposite of all the other planets.
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Earth and Mars are the planets in this solar system with similar rotation speed of approximately 24 hr.
The period of rotation for each of the planets is as follows - the sidereal rotation (rotation time against background stars); PlanetSidereal rotational periodMercury58.646225Venus-243.0187Earth0.99726957Mars1.02595675Jupiter0.41007Saturn0.426Uranus-0.71833Neptune0.67125
The dominant mode of rotation of planets, where they rotate counterclockwise on their axis as viewed from above the North Pole, is called prograde rotation.
Venus and Uranus are two planets in our solar system that have a retrograde rotation, meaning they rotate in the opposite direction of their orbit around the Sun. This retrograde motion is quite unique compared to the other planets which have a prograde rotation.
All planets turn on their axis. This is called the planet's rotation; one complete rotation is equal to one day on that planet.
Counter clockwise rotation is also known as retrograde rotation. This type of rotation is less common and can be seen in some planets and moons, such as Venus and Uranus.
Planets have no purpose. They just "are".