Comfort and Convenience
Cabin temperature is a good example of how preferences diverge. Some people travel warm and others keep the air cool; clothing, the weather outside and simple personal tolerance all pull the ideal setting in different directions.
Safety and Driver Assistance
Preparation means arranging mirrors and trying the main switches while parked, so their positions are known by touch rather than searched for in motion. Doing this once, calmly, saves rediscovering the layout on the move.
Multimedia and Connectivity
Taking a call while driving is a distinct need from streaming music: it involves microphones and speakers rather than a playlist. If hands-free telephony is available, the practical gain is keeping the phone out of your hands.