Comfort and Convenience
Comfort preferences differ mainly because bodies and habits differ. A seat height that suits a tall driver can leave a shorter one stretching, so the position worth keeping is usually found by trying a few.
Safety and Driver Assistance
Spending a few minutes with wipers, lights and mirrors while parked makes those movements familiar, so later you are not hunting for a switch while the car is already moving.
Multimedia and Connectivity
Charging and audio are separate needs. A phone can play music without gaining charge, or charge without handling calls, so it helps to know which functions a given connection actually covers.