Autoboxes .... why ?I

I’ve just had the misfortune of a fortnight driving a XF Daf with an auto box why on earth do these thing exist is it really that difficult to change gear manually.Half the time i have been over riding the system and changing up or down myself so whats the point.I used the exhauster the other day and nearly broke my noseonthe windscreen .If this is the shape of things to come get me outta here… and dont even mention reversing uphill loaded into a tight spot