Comfort and Convenience
Cabin temperature is the classic preference that varies from person to person: what one occupant finds pleasant, another finds too cool. Clothing, build and simply sitting still rather than driving all shift where someone would set it.
Safety and Driver Assistance
A short pause to locate wipers, lights, mirrors and the hazard switch before setting off means those things are already known when weather or traffic changes. Preparation is easiest while stationary, with passengers still settling in.
Multimedia and Connectivity
Keeping a phone charged on a longer run matters mainly for navigation and for being reachable on arrival. Where a suitable power source is available, topping up can continue quietly while music plays or a call runs.