Answer:
Sometimes I annoy you, sometimes you can't live without me. But no matter how hard you try, you can't destroy me. What am I?
I have a head tail but no arms and legs.
I have a brother. However much we run we do not reach each other.
I am always in front of you but you will never see me
I have four fingers and a thumb, but I'm not living. What am I?
Give it food and it will live, give it water and it will die.