Comfort and Convenience
Preferred cabin temperature is a good example: the same setting feels right to one person and stuffy to another, because build, clothing and habit differ. That is why comfort is usually discussed as a preference rather than a fixed target.
Safety and Driver Assistance
A few minutes spent before departure locating the essentials, such as lights, wipers, the hazard switch and screen heating, means none of them has to be found for the first time in traffic. Preparation is simply easier done stationary.
Multimedia and Connectivity
Keeping a phone charged on a long drive is its own need, separate from calls or music. Where a suitable power source is available, the practical point is that the phone still works on arrival.