Comfort and Convenience
Preferred cabin temperature varies widely; one passenger's comfortable setting feels cool to another. Clothing, time of day and where someone sits all shift that judgement, so a single setting rarely suits everyone.
Safety and Driver Assistance
It is worth setting mirrors and seating position before moving off rather than while driving. Knowing in advance where the hazard lights and demister sit also saves hunting for them in traffic.
Multimedia and Connectivity
Battery drain matters on longer trips: a phone used for navigation consumes power steadily, so a charging point is useful. Whether audio also travels over that same connection depends on how the system is set up.