Comfort and Convenience
Seating height is one plain example: some people want a raised, commanding view of the road ahead, while others prefer to sit low and close to the controls. Build, height and long habit explain the split.
Safety and Driver Assistance
It is worth spending a few stationary minutes locating wipers, lights, demisters and hazard switches before setting off, particularly in an unfamiliar car. Doing it parked means not learning the layout while already moving.
Multimedia and Connectivity
Keeping a phone charged matters most when it doubles as the navigation device, since constant screen use drains a battery. If a power source is available, cable reach and a stable resting spot decide how usable it is.