Comfort and Convenience
Preferred seating height is a common example: some people want a raised view over the road, others a lower, more enclosed position. Build, habit and the roads usually travelled all shape which feels natural.
Safety and Driver Assistance
Learning where the lights, wipers and mirror adjusters sit before setting off means fewer moments spent searching later. A short pause in a stationary car covers what would otherwise be worked out in traffic.
Multimedia and Connectivity
Keeping a phone charged across a long day matters to many owners; if a suitable power outlet or cable is available, the phone stays usable at the destination rather than only during the drive.