Comfort and Convenience
Seating position is a personal preference: some drivers want to sit low and close to the wheel, others upright and further back. Build and driving habits differ, so a comfortable setting is individual rather than universal.
Safety and Driver Assistance
Locating lights, wipers and the hazard switch while parked means less searching later. Preparation is simply a matter of knowing where a control sits, so that using it does not compete with watching the road.
Multimedia and Connectivity
Keeping a phone charged on longer trips is a common need. Where a suitable socket or port is available, charging is separate from calls and music, each of which may rely on different settings.