Anything that is unknown or uncertain is cause for great concern. Fear or anxiety in the face of uncertainty, imagining a scenario of catastrophe, makes coping more difficult and adds to distress if things do turn out to be threatening. It's easier to avoid life's difficulties and responsibilities than to face them. This is irrational because avoiding a task is often more difficult than performing it and leads to later complications and problems, and probably loss of self-confidence. You need someone stronger than yourself to rely on.
Dependency results in loss of individuality and self-expression.
Your independent judgement and awareness of your particular needs are undermined by a reliance on a higher authority. This propitiative attitude leads to insecurity as the person is at the mercy of the other's whim. This is dramatised in the need for a guru or religious father figure. The rational person does not refuse to seek or accept help when necessary but strives for independence and responsibility, recognising that risks, while possibly resulting in failures, are worth taking and that failure itself is not a catastrophe. Good relationships are based on mutual sacrifice and a focus on giving.