Comfort and Convenience
Preferred seating height varies widely: some drivers want a raised view over the bonnet, others sit lower for a sense of being held in place. Build and habit both play a part.
Safety and Driver Assistance
Adjusting mirrors, seat and steering column is easier stationary than in motion, when attention is divided. Doing it before setting off also reveals which switches need a longer look.
Multimedia and Connectivity
Charging and audio are separate needs: a cable that powers a phone does not necessarily carry sound. Where wireless audio is available, a socket may still be wanted purely for topping up the battery.