Comfort and Convenience
Seating preferences differ with height, leg length and driving posture, so the position one person finds natural can feel wrong to another. That is why occupants tend to reset things after someone else drives.
Safety and Driver Assistance
Checking where the main switches sit before setting off leaves less to work out later. A few minutes parked is a calmer time to learn a layout than a wet junction in moving traffic.
Multimedia and Connectivity
A phone that runs low on a long drive needs charging, which is separate from whether it can play music or handle calls. If a car offers all three, each may use a different connection.