Comfort and Convenience
On a short shop run, someone coming from a warm office may want cooler air, while a person coming in from the street may prefer a warmer cabin.
Safety and Driver Assistance
Spending a moment with the lights, wipers, and indicators before leaving a side street means those controls are already known when weather or light changes.
Multimedia and Connectivity
If a phone is low on charge during a long wait at school pickup, a cabin socket, if present, can keep it available for messages, which is separate from calls or music.