The paperwork trail is for your protection and to help stop sub-stadard parts getting fitted to your aircraft.
The quality system is not perfect and a lot of stupid anomalys can be found (like the £40 GE landing light that can be brought in a disco shop for £ 5 )
But if the system makes shure that the wing spar bolts are to the correct standard and not made from "monkey metal" in a Bombay back street then it is a price that I am willing to pay............after all I only get one life !.