belief in God is necessary because if we do not believe in God then we will not have a place to complain about everything. we must remember that everything we enjoy today is a gift from God and we should be grateful for the blessings God has given it.
Definitely,I do believe in god.He created the entire universe.We should be grateful to him for all the blessings he gave us.Just like you cannot see the air and electric power and can only feel,same is God you can only feel and through the reasoning power given to you,you can realize him.
You do understand what you are saying. The existence of air or electricity is easy to verify, and the existence of God, nobody can prove and verify. The fact that God created the universe this is all complete nonsense.