Comfort and Convenience
Seating position is a common starting point: some people prefer sitting low and reclined, others upright and closer to the wheel. Body proportions and long-held driving habits explain most of that variation.
Safety and Driver Assistance
Locating lights, wipers, demisting and hazard controls while parked means less searching later. A few minutes spent in a stationary car builds the habit of reaching for something without looking away from the road.
Multimedia and Connectivity
Keeping a phone charged on longer trips is a separate need from making calls or playing music. If a power source is available, a cable that suits the phone matters as much as the socket itself.