Comfort and Convenience
Preferred seating position is personal: drivers differ in height, arm length and how upright they like to sit, so the setup one person finds natural can leave another reaching further than they would choose.
Safety and Driver Assistance
Locating lights, wipers and demisting functions while parked means fewer unknowns later, since a driver who already knows where each control sits spends less thought searching for it once the journey has begun.
Multimedia and Connectivity
Keeping a phone charged on longer trips is a common need in its own right: if a suitable power outlet or cable connection is available, the battery holds up independently of whether calls or music are being used.