Question

Why earth rotation is important to us?

Answer 1

1 change in irradiation
2 change in day N night
3 change in ocean currents
4 finding location

Answer 2

Hello there your answer

Earth rotation is important because 

change in day and night 

change in seasons 

if the Earth would be in one  place only the part which will be facing the sun gets sunlight and the dark part would be like that only so rotation is necessary  

Hope it helps you dear...