Comfort and Convenience
Some occupants like more airflow on a warm afternoon errand, while others prefer stiller air so conversation stays easy. That split is personal rather than a single correct setting.
Safety and Driver Assistance
A few seconds at the kerb before a market run, spent noting the indicator and horn actions, means those controls can be used from memory after the vehicle is already among other traffic.
Multimedia and Connectivity
A short call to confirm a table while parked outside a restaurant is a typical phone need. If a cabin speaker is available, the exchange can happen without holding the handset to the ear.