“646: Cause you are a lot more likely to err than a Rav is. “
Do you truly believe that? When did you start thinking that you are not responsible for your own decisions in life? I would never trust important things in my life to someone who has no real stake in ensuring my happiness and growth as a person, but might have another agenda. If we are grownups, we are supposed to be grown up, and that involves making choices, sometimes not necessarily the right ones, from which we learn and mature. When we give over our bechira chofshis to anyone, a rov, a parent, anyone else, we are basically telling Hashem he made a mistake in giving us that matana of Free Will.