This lowers your centre of gravity making you more stable. When abseiling you can easily slip and let go of the rope with drastic consequences, so it’s a very good idea to use an autobloc as a back up ...
Making it safer When abseiling you can easily slip and let go of the rope with drastic consequences, so it’s a very good idea to use an autobloc as a back up to hold the control rope if you let go.