Comfort and Convenience
Seating position is a good example: taller occupants often want to sit low with legs extended, while others prefer an upright view over the bonnet. Build, height and habit all pull in different directions.
Safety and Driver Assistance
Taking a few minutes before setting off to locate lights, wipers, mirrors and demisting means less fumbling later. Preparation like this is easiest done while parked, when nothing else is competing for attention.
Multimedia and Connectivity
Keeping a phone charged on long days matters to some people more than audio quality does; where charging is available, the position of the socket decides whether a cable sits neatly or across the console.