We grow up in broken families, we learn to have low self-esteem, we experience abused power and disregard for human life. All over the world, people every day learn how to become more functional, less co-dependent . I can't say I'll do it in the most coherent of ways, but I'll make a good go of it. But fear is an emotion that tends to distance us from the presence of God. It can even block our experience of God's grace .
Fear is often our response to perceieved threat.
We fear those things which can hurt us. Fear can act to help us maintain safety and security by moving us away from the thing we fear. If we fear God, we tend to move away from Him. A threat would be a danger, something that would compromise our survival. Our very survival comes from God.